Answers
Answer: 31.8 g
Explanation:
To calculate the moles :
\(\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}\)
\(\text{Moles of} Al_2O_3=\frac{60.0g}{102g/mol}=0.59moles\)
\(\text{Moles of} C=\frac{30.0g}{12g/mol}=2.5moles\)
\(Al_2O_3+3C\rightarrow 2Al+3CO\)
According to stoichiometry :
1 mole of \(Al_2O_3\) require 3 moles of \(C\)
Thus 0.59 moles of \(Al_2O_3\) will require=\(\frac{3}{1}\times 0.59=1.77moles\) of \(C\)
Thus \(Al_2O_3\) is the limiting reagent as it limits the formation of product and \(C\) is the excess reagent as it is present in more amount than required.
As 1 mole of \(Al_2O_3\) give = 2 moles of \(Al\)
Thus 0.59 moles of \(Al_2O_3\) give =\(\frac{2}{1}\times 0.59=1.18moles\) of \(Al\)
Mass of \(Al=moles\times {\text {Molar mass}}=1.18moles\times 27g/mol=31.8g\)
Thus 31.8 g of \(Al\) will be produced from the given masses of both reactants.
Related Questions
A factory uses a water tank to cool one of its pieces of machinery. To keep the water cold, fresh water enters the tank at a rate of 4 kilograms per second. Water also flows out of the tank at the same rate. The tank holds 8,000 kilograms of water.
Answers
The residence time for the average water molecule in that water tank is 2,000 seconds.
What is residence time?
The amount of material in the reservoir divided by the inflow or outflow constitutes the residence time, according to definition (they are equal when the reservoir is at equilibrium). If there are several inflows or outflows, we calculate the residence time using the sum of the inflows or outflows.
In one second, 4 kilograms will be added to the tank. In other words, you divide 8,000 kilograms of water by 4, which gets you 2,000.
Therefore, the residence time for the average water molecule in that water tank is 2,000 seconds.
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Which of these is an example of a physical property?
A. Iron combines with oxygen to rust.
B. Potassium reacts in water to form a base.
C. Sodium metal is soft and malleable.
D. Sodium ignites when placed in water.
Answers
Which most likely indicates a chemical change has occurred?
a solid substance becoming larger
a solid melting and becoming a liquid
a green liquid becoming a red liquid
a liquid freezing and becoming a solid
Answers
Answer:
A green liquid becoming a red liquid.
Explanation:
If the color change is unexpected it is a chemical change.
(If 2 clear liquids make a black, red, green, ect color it is a chemical change)
no normal color mix makes green turn red.
Give the number of significant figures in this number: 0.025
Answers
If an atom contains 11 protons and 12 neutrons, its ATOMIC NUMBER is: a 1 b 11 c 12 d 23
Answers
Answer:
B)11
Explanation:
The atomic number is the number of protons and electrons in an atom!!
HOPE THIS HELPS!!!!!!
How many oxygen atoms are present in one mole of potassium carbonate? K2CO3 I have to choose between A B C or D Which is the correct answer?
Answers
Three moles of oxygen atoms, or 48.00 g, are definitely present in one mole of potassium carbonate, or almost half the salt's mass.
In how many oxygens does a carbonate molecule consist?Whenever a molecule has multiple identical atoms, the number of them is indicated just at bottom right of a relevant symbol, as in the following example: Carbonate of Calcium: CaCO3 is made up of one calcium atom, one carbon atom, and three oxygen atoms.
What is the o2's K2O coordination number?For instance, in K2O, the oxide creates the cubic tight packing while the potassium fills all 8 tetragonal holes. Eight potassium cations surround the oxygen anions in a cubic arrangement, while four oxygen atoms surround the potassium cations in a tetrahedral arrangement ((4,8)-coordination).
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Provide the coefficients needed to balance the redox reaction given. Choose... Fe(s) + Choose... Cl2(g)→ Choose... Fe3+(aq) + Choose... Cl-(aq)
Answers
Answer:
3 Cl₂(g) + 2 Fe(s) → 6 Cl⁻(aq) + 2 Fe³⁺(aq)
Explanation:
Step 1: Write the unbalanced redox reaction
Fe(s) + Cl₂(g) → Fe³⁺(aq) + Cl⁻(aq)
Step 2: Identify both half-reactions
Reduction: Cl₂(g) → Cl⁻(aq)
Oxidation: Fe(s) → Fe³⁺(aq)
Step 3: Perform the mass balance
Cl₂(g) → 2 Cl⁻(aq)
Fe(s) → Fe³⁺(aq)
Step 4: Perform the charge balance
2 e⁻ + Cl₂(g) → 2 Cl⁻(aq)
Fe(s) → Fe³⁺(aq) + 3 e⁻
Step 5: Multiply both half-reactions by numbers that make that the number of electrons gained and lost are equal
3 × [2 e⁻ + Cl₂(g) → 2 Cl⁻(aq)]
2 × [Fe(s) → Fe³⁺(aq) + 3 e⁻]
Step 6: Add both half-reactions and cancel what is repeated in both sides
6 e⁻ + 3 Cl₂(g) + 2 Fe(s) → 6 Cl⁻(aq) + 2 Fe³⁺(aq) + 6 e⁻
3 Cl₂(g) + 2 Fe(s) → 6 Cl⁻(aq) + 2 Fe³⁺(aq)
The coefficients needed to balance the redox reaction is as follows: 3Cl₂(g) + 2Fe(s) → 6Cl⁻(aq) + 2Fe³⁺(aq)
The unbalanced redox reaction is given as: Fe(s) + Cl₂(g) → Fe³⁺(aq) + Cl⁻(aq)The balanced half-reactions in these equation are as follows:Reduction: Cl₂(g) → 2Cl⁻Oxidation: Fe(s) → Fe³⁺Next, we balance the charges in both half-reactions as follows:2e⁻ + Cl₂(g) → 2Cl⁻Fe(s) → Fe³⁺ + 3e⁻Next, we multiply both half-reactions by coefficients that make number of electrons gained and lost equal.3 × [2e⁻ + Cl₂ → 2 Cl⁻]2 × [Fe → Fe³⁺ + 3e⁻]Overall, we have:6e⁻ + 3Cl₂(g) + 2Fe(s) → 6Cl⁻(aq) + 2Fe³⁺(aq) + 6e⁻We cross out both electrons on both sides to have:3Cl₂(g) + 2Fe(s) → 6Cl⁻(aq) + 2Fe³⁺(aq)Learn more at: https://brainly.com/question/13293425?referrer=searchResults
draw a potentail energy diagram for a combustion reaction
Answers
Potential energy diagram for a combustion reaction:. CLICK ON IMAGE.
In a typical combustion reaction, the reactants (e.g. a fuel and an oxidizer) are initially at a relatively high potential energy. As the reaction proceeds, the potential energy of the system decreases, and the products (e.g. carbon dioxide and water vapor) are at a lower potential energy than the reactants. The difference in potential energy between the reactants and products corresponds to the heat released during the reaction.
The diagram shows the initial energy level of the reactants, the activation energy required to initiate the reaction, and the final energy level of the products. The activation energy is the minimum amount of energy required for the reaction to occur.
Once the reactants have absorbed enough energy to reach the activation energy threshold, the reaction proceeds spontaneously and releases energy as it progresses to the lower-energy products.
Note that the shape of the potential energy diagram can vary depending on the specific reaction and the reaction conditions. For example, some reactions may have more complex energy profiles with multiple intermediate steps or energy barriers.
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What were the advantages for Mendel in using pea plants for his breeding experiments?
Answers
Answer:
He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.
Explanation:
2. In which state of matter do particles vibrate in place? *
1 point
A. gas
B. solid
C. liquid
Answers
solid.................
Answer:
b solid
Explanation:
i know for a fact
Which is the largest number? O A. 2.2 x 108 O B. 2.9 O C. 2.5 x 10-5 D. 2.8 x 106
Answers
Answer:
2.2 x 10⁸
Explanation:
We are to find the largest number from the given set of numbers:
2.2 x 10⁸
2.9
2.5 x 10⁻⁵
2.8 x 10⁶
The largest number is the first one; 2.2 x 10⁸ ;
2.2 x 100 000 000
the other numbers are far lesser than this number;
1. You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to determine which layer is the aqueous layer.
Answers
Answer:
You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to determine which layer is the aqueous layer.
Explanation:
In the separating funnel, the liquid with less density exists at the top layer and the liquid with greater density will exist at the bottom layer.
To identify the aqueous layer, add a bit of water to the separating funnel.
Then, observe where the water will go and mix.
If it mixes with the bottom layer, then the bottom layer is the aqueous layer.
If water mixes with the top layer, then top layer is the aqueous layer.
A method we could use to determine which layer is the aqueous layer is by adding 2-4 drops of water in the separatory funnel.
Explanation:
A separatory funnel is a glass apparatus used in labs to separate two immiscible liquids from each other.The two liquids will be present distinctly in form of two different layers one on the other.The liquid at the bottom is with higher density in comparison to the liquid layer at the top which is with lower density.It is mainly used to separate the layer of organic compounds from the aqueous layer.One way to determine the aqueous layer in the separatory funnel is to add 2-4 drops of water to the separatory funnel and observe in which layer the water drops get invisible that is mixed up.The layer in which water drop mixes will experience a small increase in its volume and that will be the aqueous layer.Water drops will not mix with the organic layer can be easily observed with eyes.So, from this, we can conclude that a method we could use to determine which layer is the aqueous layer is by adding 2-4 drops of water in the separatory funnel.
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A chemical reaction has the equation 2AgNO3 (aq) + Zn (s) 2Ag (s) + Zn(NO3)2 (aq). What type of reaction occurs between AgNO3 and Zn?
Answers
Answer: single replacement reaction
Explanation:
A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution. Thus one element should be different from another element.
A general single displacement reaction can be represented as :
\(X+YZ\rightarrow XZ+Y\)
The reaction \(2AgNO_3(aq)+Zn(s)\rightarrow 2Ag(s)+Zn(NO_3)_2(aq)\)
When zinc metal is added to aqueous silver nitrate, zinc being more reactive than silver displaces silver atom from its salt solution and lead to formation of zinc nitrate and silver metal.
3. A Wilkinson’s catalyst is widely used in the hydrogenation of alkenes. Show a catalytic cycle, including: i. chemical structure of the catalyst, with complete stereochemistry ii. molecular geometry of catalyst iii. type of reactions involved iv. the appropriate starting material, reagent and solvent v. major and minor end-products vi. all intermediates, for each reaction stated in (iii)
Answers
We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.
What are the steps involved?Here's an overview of the catalytic cycle, including the necessary details:
i. Chemical structure of the catalyst:
Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]
ii. Molecular geometry of the catalyst:
The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.
iii. Type of reactions involved:
The catalytic cycle involves several reactions, including:
Oxidative addition: The rhodium center undergoes oxidative addition, reacting with molecular hydrogen (H2) to form a dihydride intermediate.Alkene coordination: The alkene substrate coordinates to the rhodium center, forming a π-complex.Hydrogenation: The coordinated alkene undergoes hydrogenation, resulting in the addition of hydrogen atoms to the double bond and formation of a metal-alkyl intermediate.Reoxidation: The metal-alkyl intermediate reacts with a hydrogen molecule to regenerate the rhodium dihydride species.iv. Starting material, reagent, and solvent:
The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).
v. Major and minor end-products:
The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.
vi. Intermediates:
The intermediates in the catalytic cycle include:
Rhodium dihydride complex: [RhH2(PPh3)3]Alkene-Rhodium π-complex: [Rh(η2-alkene)(PPh3)3]Metal-alkyl intermediate: [Rh(alkyl)(PPh3)3]These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.
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Write balanced equation for these. Then solve the problem.
When 3.24 moles of magnesium chlorate decompose, how many grams of oxygen are produced?
When 78.5 moles of copper react with sulfur, how many grams of copper(I) sulfide are produced?
9.00 x 10^3 mols of hydrogen gas are produced when you drop how many grams of potassium in water?
When calcium phosphide is treated with 2.95 x 10^-6 moles of aluminum oxide, what is the mass of calcium oxide formed?
Answers
1) 155.52 g of oxygen of magnesium chlorate. 2) 6,246.41 g of copper(I) sulfide is produced from 78.5 moles of copper. 3) 175.95 kg of potassium produce 9.00 x \(10^3\) . 4) 1.49 x \(10^-4\)g of calcium oxide is formed from 2.95 x \(10^-6\) moles of aluminum oxide and calcium phosphide.
1. The balanced equation for the decomposition of magnesium chlorate is:
2Mg\((ClO_{3})\)2(s) → 2MgO(s) + \(3O_{2} (g)\) +\(2Cl_{2} (g)\)
From the equation, 2 moles of magnesium chlorate produce 3 moles of oxygen gas.
So, 3.24 moles of magnesium chlorate will produce (3/2) x 3.24 = 4.86 moles of oxygen.
The molar mass of oxygen is 32 g/mol.
Therefore, the mass of oxygen produced is:
4.86 moles x 32 g/mol = 155.52 g
2. The balanced equation for the reaction between copper and sulfur is:
2Cu(s) + S(s) → \(Cu_{2}S(s)\)
From the equation, 2 moles of copper react with 1 mole of sulfur to produce 1 mole of copper(I) sulfide.
So, 78.5 moles of copper will produce (1/2) x 78.5 = 39.25 moles of copper(I) sulfide.
The molar mass of copper(I) sulfide is 159.16 g/mol.
Therefore, the mass of copper(I) sulfide produced is:
39.25 moles x 159.16 g/mol = 6,246.41 g
3. The balanced equation for the reaction between potassium and water is:
2K(s) + 2\(H_{2}O\)(l) → 2KOH(aq) + \(H_{2}\)(g)
From the equation, 2 moles of potassium react with 2 moles of water to produce 1 mole of hydrogen gas.
So, 9.00 x \(10^3\) moles of hydrogen gas will be produced by the reaction of (1/2) x 9.00 x \(10^3\) = 4,500 moles of potassium.
The molar mass of potassium is 39.10 g/mol.
Therefore, the mass of potassium required is:
4,500 moles x 39.10 g/mol = 175,950 g or 175.95 kg
4. The balanced equation for the reaction between calcium phosphide and aluminum oxide is:
\(3Ca_{3}P_{2}\)(s) +\(10Al_{2}O_{3}(s)\) → 9CaO(s) + \(2Al_{2}S_{3}\)(s) + \(6P_{4}\)(g)
From the equation, 3 moles of calcium phosphide react with 10 moles of aluminum oxide to produce 9 moles of calcium oxide.
So, 2.95 x\(10^-6\) moles of aluminum oxide will produce (9/10) x 2.95 x \(10^-6\) = 2.655 x \(10^-6\) moles of calcium oxide.
The molar mass of calcium oxide is 56.08 g/mol.
Therefore, the mass of calcium oxide formed is:
2.655 x\(10^-6\) moles x 56.08 g/mol = 0.000149 g or 1.49 x \(10^-4 g\).
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All atoms of the same element contain the same number of protons. The atom that has 9 protons can be represented by the symbol? The answer is B) F
Answers
Answer:Ok den...
Explanation:
Nope
To determine the mass of 4.35 moles of potassium chloride
Answers
The mass of 4.35 moles of potassium chloride is 324.14 grams. Potassium chloride (KCl) is a chemical compound made up of potassium and chlorine.
Potassium chloride (KCl) is a chemical compound composed of potassium and chlorine. It is commonly used as a salt substitute for people on low-sodium diets, as well as a fertilizer, a source of potassium in food additives, and a component of some medical solutions. Potassium chloride can also be used in the production of various chemicals, including explosives and pharmaceuticals.
The molar mass of potassium chloride (KCl) is 74.55 g/mol (39.10 g/mol for K and 35.45 g/mol for Cl).
To calculate the mass of 4.35 moles of KCl, we can use the following formula:
mass = moles × molar mass
So, the mass of 4.35 moles of KCl is:
mass = 4.35 moles × 74.55 g/mol
mass = 324.14 g
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What is the concentration of F— ions when 369.205 mg of MgF2 (62.3018 g/mol) completely dissociates in 2.686 L of water?
Enter the numeric answer only in the units of mM (millimolar).
Answers
Magnesium fluoride is the name of the ionic substance that results from the union of magnesium and fluoride ions. The compound has the chemical formula MgF2 Mg F 2.
What is the chemical formula of a compound with Mg and F?Magnesium fluoride is the name of the ionic substance that results from the union of magnesium and fluoride ions. The compound has the chemical formula MgF2 Mg F 2. Magnesium ion has an oxidation state of +2, while fluorine has an oxidation state of -1. Therefore, two fluoride ions are combined with a magnesium ion to equalize the charges.It consists of one magnesium atom and two fluorine atoms. It contains anions and cations since it is an ionic substance. In comparison to fluorine, magnesium is a metal with a substantially lower electronegativity. Consequently, this chemical is made up of a magnesium cation and two fluoride anions.To learn more about Magnesium fluoride refer to:
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Describe the advantages of the hydrogen-rich fuel cell when compared to the conventional electrochemical cells such as lead-acid battery. (4)
Answers
The hydrogen-rich fuel cell offers advantages in terms of efficiency, environmental impact, operating time, refueling speed, weight, size, and lifespan when compared to conventional electrochemical cells like the lead-acid battery.
The hydrogen-rich fuel cell offers several advantages over conventional electrochemical cells like the lead-acid battery. Here are some of the key advantages:
1. Higher Efficiency: Hydrogen fuel cells have higher energy conversion efficiencies compared to lead-acid batteries. Fuel cells can convert chemical energy directly into electrical energy with minimal loss, while lead-acid batteries have inherent energy losses due to factors such as internal resistance and heat dissipation.
2. Clean and Environmentally Friendly: Hydrogen fuel cells produce electricity through the reaction of hydrogen and oxygen, with water being the only byproduct. They do not produce harmful emissions or contribute to air pollution, making them a cleaner and more sustainable power source compared to lead-acid batteries, which require the use of chemicals like sulfuric acid.
3. Longer Operating Time: Fuel cells have longer operating times compared to lead-acid batteries. Lead-acid batteries have a limited capacity and need to be recharged frequently, while fuel cells can continuously generate electricity as long as there is a supply of hydrogen.
4. Faster Refueling: Refueling a fuel cell is faster compared to recharging a lead-acid battery. Fuel cells can be refueled by replenishing the hydrogen supply, which can be done relatively quickly. In contrast, lead-acid batteries require a longer time to recharge, typically hours, depending on the battery's capacity and charging rate.
5. Lighter Weight and Compact Size: Hydrogen fuel cells have a higher energy density compared to lead-acid batteries, meaning they can store more energy in a smaller and lighter package. This makes fuel cells more suitable for applications where weight and space are critical, such as in portable devices or electric vehicles.
6. Longer Lifespan: Fuel cells generally have a longer lifespan compared to lead-acid batteries. Lead-acid batteries can experience degradation over time due to factors like sulfation, which can reduce their overall capacity and lifespan. Fuel cells, on the other hand, can provide consistent performance over an extended period with proper maintenance.
These advantages make fuel cells a promising technology for various applications, including transportation, stationary power generation, and portable electronics.
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The first-order rate constant for the decomposition of N2O5
2N2O5(g)→4NO2(g)+O2(g)
at 70∘C is 6.82×10−3 s−1. Suppose we start with 2.70×10−2 mol of N2O5(g)
in a volume of 2.5 L
1) How many moles of N2O5 will remain after 7.0 min?
2)How many minutes will it take for the quantity of N2O5 to drop to 1.7×10−2 mol?
3)What is the half-life of N2O5 at 70 ∘C?
Answers
ln([N2O5]t/[N2O5]0) = -kt
where [N2O5]t is the concentration of N2O5 at time t, [N2O5]0 is the initial concentration of N2O5, k is the rate constant, and t is the time. Rearranging this equation, we get:
[N2O5]t = [N2O5]0 * e^(-kt)
Plugging in the given values, we get:
[N2O5]t = (2.70×10^−2 mol) * e^(-6.82×10^−3 s^-1 * 7.0 min * 60 s/min) = 1.20×10^−2 mol
Therefore, 1.20×10^−2 mol of N2O5 will remain after 7.0 min.
2) To calculate the time it takes for the quantity of N2O5 to drop to 1.7×10−2 mol, we can rearrange the equation from part 1 and solve for t:
t = -ln([N2O5]t/[N2O5]0)/k
Plugging in the given values, we get:
t = -ln(1.7×10^-2 mol/2.70×10^-2 mol)/(6.82×10^-3 s^-1) = 9.5 min
Therefore, it will take 9.5 min for the quantity of N2O5 to drop to 1.7×10^-2 mol.
3) The half-life of a first-order reaction is given by:
t1/2 = ln(2)/k
Plugging in the given rate constant, we get:
t1/2 = ln(2)/(6.82×10^-3 s^-1) = 101.6 s
Therefore, the half-life of N2O5 at 70°C is 101.6 s.
If an aerosol can contained 350 mL of CFC gas at a pressure of 5.7 atm, what volume would this gas occupy at 1.0 atm ?
Answers
Answer:
2.0 L
Explanation:
P1= first pressure
P2= second pressure
V1= first volume
V2= second volume
P1V1 = P2V2=
(5.7 atm)(350 mL) = (1.0atm)V2
V2= (5.7 atm)(350 mL) / (1.0 atm)=
V2= 1.99500 L = 2.0 L
ASAP PLS
A 18.7 g piece of aluminum (which has a heat capacity of 0.89 JPC-g) is
heated to 82.4°C and dropped into a calorimeter containing water
(specific heat capacity of water is 4.18 J/gºC) initially at 22.3°C. The final
temperature of the water is 24.3°C. Ignoring significant figures, calculate
the mass of water in the calorimeter. *
Answers
Answer:
think I did this before and its V
How many oxygen atoms are there in 0.12 g of ozone (O3) at STP?
Answers
After considering the given data we conclude that the total number of oxygen atoms obtained are 4.52 x 10²¹ oxygen atoms, under the condition that the given solution had 0.12 g of ozone (\(O_{3}\)) at STP.
The molecular weight of ozone is 48 g/mol. Then one molecule of ozone consists three oxygen atoms. So, the number of moles of ozone in 0.12 g can be evaluated as:
0.12 g / 48 g/mol = 0.0025 mol
Now if one mole of ozone contains three moles of oxygen atoms, the number of oxygen atoms in 0.12 g of ozone can be evaluated as:
0.0025 mol x 3 = 0.0075 mol
Finally, the number of oxygen atoms can be evaluated applying Avogadro's number:
0.0075 mol x 6.022 x 10^²³ molecules/mol
= 4.52 x 10²¹ oxygen atoms.
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Write the balanced equation for the equilibrium reaction for the dissociation ofsilver chloride in water, and write the K expression for this reaction. Then create an ICE chart. Since we know the equilibrium concentration of the silver ion, we can solve for Ksp.Does it agree with the literature value
Answers
Answer:
See explanation
Explanation:
Hello there!
In this case, since the the concentrations are not given, and not even the Ksp, we can solve this problem by setting up the chemical equation, the equilibrium constant expression and the ICE table only:
\(AgCl(s)\rightleftharpoons Ag^+(aq)+Cl^-(aq)\)
Next, the equilibrium expression according to the produced aqueous species as the solid silver chloride is not involved in there:
\(Ksp=[Ag^+][Cl^-]\)
And therefore, the ICE table, in which x stands for the molar solubility of the silver chloride:
\(\ \ \ \ \ \ \ \ \ \ \ \ \ \ AgCl(s)\rightleftharpoons Ag^+(aq)+Cl^-(aq)\)
I - 0 0
C - +x +x
E - x x
Which leads to the following modified equilibrium expression:
\(Ksp=x^2\)
Unfortunately, values were not given, and they cannot be arbitrarily assigned or assumed.
Regards!
Calculate the work done when a force of 4 N pulls a box along the floor for a distance of 0.3 m.
Answers
Answer:
1.2 Joulesolution,
Force=4 N
Distance=0.3 m
Now,
\(work = f \times d \\ \: \: \: \: \: \: \: \: \: \: \: = 4 \times 0.3 \\ \: \: \: \: \: \: \: \: \: \: \: = 1.2 \: joule\)
hope this helps...
Good luck on your assignment....
How many atoms are in 8g of Oxygen (O2)?
Answers
Answer:
There are 3.011 × 10^23 oxygen atoms
Define biotechnology. } List two advantages in the use of biotechnology
Answers
Advantages of biotechnology:
Improvement of plants and animal breeds to give a high yield of their products.
Pests and pathogen control in agriculture which will reduce the loss of yield in food crops.
Synthesis of biocatalyst which can be used for enhancing the reactions which can be carried out in vitro or laboratory conditions.
Sewage treatment or water recycling can be done with the help of transgenic microbes which have better efficiency and speed.
Biotechnology is the use of living organisms or other biological systems in the manufacture of drugs or other products or for environmental management, as in waste recycling: includes the use of bioreactors in manufacturing, microorganisms to degrade oil slicks or organic waste, genetically engineered bacteria to produce human hormones, and monoclonal antibodies to identify antigens.
Biotech offers the possibility of improving human health, the environment, and agriculture while creating more sustainable modes of production.
Draw an example of each phase change that you can observe at home
Answers
The diagram of the different states and each phase change that can be observed at home is attached.
What are the different phases?Melting
Ice melting in your hand. As you hold an ice cube in your hand, the heat from your hand will cause the ice to melt. The ice will start to become liquid water, and eventually it will all melt into a puddle of water.
Butter melting in a pan. When you heat butter in a pan, the heat will cause the butter to melt. The butter will start to become liquid oil, and eventually it will all melt into a pool of oil.
Evaporation
Water evaporating from a puddle. As the sun heats a puddle of water, the water molecules will start to move faster and faster. Eventually, some of the water molecules will have enough energy to escape from the surface of the puddle and turn into water vapor. The water vapor will rise into the air, where it will eventually condense and form clouds.
Perfume evaporating from a bottle. When you open a bottle of perfume, the perfume molecules will start to evaporate. The perfume molecules will spread through the air, and you will be able to smell the perfume.
Condensation
Condensation on a cold glass. When you take a cold glass out of the refrigerator, you will see water droplets forming on the outside of the glass. This is because the cold glass is causing the water vapor in the air to condense. The water vapor molecules will lose energy as they come into contact with the cold glass, and they will eventually turn into liquid water.
Clouds forming. When water vapor rises into the air, it cools down. As the water vapor cools down, it will eventually condense and form clouds.
Freezing
Water freezing in your freezer. When you put water in the freezer, the water will eventually freeze. The water molecules will slow down as they get colder, and eventually they will form a solid.
Ice cream freezing in your freezer. When you put ice cream in the freezer, the ice cream will eventually freeze. The ice cream molecules will slow down as they get colder, and eventually they will form a solid.
Find out more on water forms here: https://brainly.com/question/5792491
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Answers
Answer:
gelatin and cornstarch
Explanation:
when looking at the data show you can infer the correct answer. hope this helps!
Answer:
Corn Starch and Gelatin
Explanation:
They both give the same as unknown
Compounds A and B (both C10H14) show prominent peaks in their mass spectrum at m/z 134 and 119. Compound B also shows a less prominent peak at m/z 91. On vigorous oxidation with chromic acid, compound A is nonreactive while compound B yielded terephthalic acid.
Required:
From this information, deduce the structures of both compounds, and then draw the structure of B.