8.0 mol AgNO3 can form 8.0 mol Ag and
5.0 mol Zn can form 10.0 mol Ag.
Ag: 108 g/mol
What mass of Ag can form during
the reaction?

Answer:

I think its might be 1 because the ionic numbers for CA is +2 and for P its +3

Answer:

2 answer

A List of Chemistry Laboratory Apparatus

Safety goggles and safety equipment.

Beakers.

Erlenmeyer flasks, AKA conical flasks.

Florence flasks, AKA boiling flasks.

Test tubes, tongs, and racks.

Watch glasses.

In the scientific notation, the number that we obtain is 4.6 * 10^-10.

We know that in science we often have to deal with very large figure and these figures that we deal with could be quite cumbersome to handle. As such, it is important that we are able to devise a system that can help us to be able to write these values in a way that is simple and this is the origin of the use of the scientific notation.

The scientific notation can help us to be able to shorten the bulk of the figures tat we need to write. In this case we have the figures; 2.3 * 10^-4 * 2.0 * 10^-6 = 4.6 * 10^-10

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The diabetic should use 1.5 ml of insulin to maintain a proper blood sugar level after eating the piece of toast.

Insulin is a hormone that plays a crucial role in regulating blood sugar levels in the body, particularly in individuals with diabetes. In a person with diabetes, the body either doesn't produce enough insulin or is unable to effectively use the insulin it produces.

Insulin helps facilitate the absorption of glucose (sugar) from the bloodstream into cells, where it is used for energy or stored for later use. It acts as a "key" that unlocks cells, allowing glucose to enter.

The goal of insulin therapy in diabetes management is to keep blood sugar levels within a target range to prevent complications associated with high or low blood sugar. The dosage and timing of insulin administration are determined based on factors such as individual needs, carbohydrate intake, activity level, and blood sugar monitoring.

If the recommended daily intake of carbohydrates is 300 g, and the slice of toast represents 5% of that,

Carbohydrates in the slice = 5% of 300 g = (5/100) * 300 g = 15 g

It is recommended that the ratio of 1 ml of insulin for every 10 g of carbohydrates,

Insulin needed = (Carbohydrates in the slice) / 10 = 15 g / 10 = 1.5 ml

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Answer:

A.  Sound travels slower in air because of the large distance between air particles

Explanation:

Sound is a mechanical wave that requires a medium for its propagation. Without a medium, sound cannot go through easily or readily. This implies that sound cannot be propagated through a vacuum.

Answer:

a) Alkali

b) Na

c) Cs

d) Inner Transition

e) actinides

f) Fe

g) Hg

Explanation:

Answer:

Sulfate loses 2 electrons to sulphur dioxide.

Answer:

1:loses or gains energy

Answer:

Germanium.

Explanation:

Remember, the atomic number is the number of protons an element has. Elements are arranged in order in the periodic table. Just pull a table up, find number 32 and you will find it is Germanium (Ge).

Answer:

Germanium

Explanation:

According to the balanced equation, 31.7 grams of nitrogen gas (N₂) reacting with excess hydrogen gas (H₂) will produce a 2.264 moles of ammonia gas (NH₃).

To determine the moles of ammonia formed, we need to convert the given mass of nitrogen gas to moles using its molar mass and the stoichiometric ratio of the balanced equation.

The molar mass of nitrogen gas (N₂) is 28.02 g/mol. To calculate the number of moles of nitrogen gas, we divide the given mass by its molar mass:

31.7 g / 28.02 g/mol = 1.132 mol

According to the stoichiometry of the balanced equation, the ratio between nitrogen gas and ammonia gas is 1:2. This means that for every 1 mole of nitrogen gas, 2 moles of ammonia gas are produced.

Therefore, using the stoichiometric ratio, we can determine the moles of ammonia formed:

1.132 mol N₂ * (2 mol NH₃ / 1 mol N₂) = 2.264 mol NH₃

Thus, upon the complete reaction of 31.7 grams of nitrogen gas with excess hydrogen gas, 2.264 moles of ammonia gas will be formed.

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Answer:

Chlorine (Cl)

Answer:

6.37g of iron are produced.

Explanation:

1st) From the balanced reaction we know that 1 mole of Fe2O3 reacts with 3 moles of H2 to produce 2 moles of Fe and 3 moles of H2O.

With the molar mass of Fe2O3 (160g/mol) and H2 (2g/mol) we can convert the moles to grams:

- Fe2O3 conversion: 1 mole is equal to 160g, so here it is not necessary to calculate the conversion.

- H2 conversion:

So, from the balanced reaction we know that 160g of Fe2O3 react with 6g of H2.

2nd) Now we have to find out which compound is the limiting reactant and which compound is the excess reactant, using the 9.1g and 16.8g given in the exercise:

So, the 9.1g of Fe2O3 will need 0.34g of H2 to react properly, but we have 16.8g of H2 so H2 is the excess reactant and Fe2O3 is the limiting reactant.

3rd) Using the limiting reactant, we can calculate the grams of iron that are produced.

It is necessary to use the molar mass of iron (56g/mol) to convert the 2 moles in the reaction to grams (2 Fe moles = 112g).

Finally, 6.37g of iron are produced.

9) The reaction is spontaneous as written

10) The reaction is not spontaneous as written

A spontaneous reaction is a chemical reaction that occurs without the need for an external energy input, such as heat or electricity. It is a reaction that occurs naturally, without any outside assistance, and proceeds on its own without the need for additional energy to be added to the system.

It is important to note that a spontaneous reaction does not necessarily mean that the reaction will occur quickly or with a high rate. The rate of a reaction depends on various factors, such as the concentration of reactants, temperature, and the presence of catalysts.

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If 4 grams of hydrogen with excess oxygen make 18 grams of water, what is the yield in percentage terms? 2H^2 + O^2 —-> 2H^2O

Hydrogen is a gas at standard conditions of temperature and pressure, but around -423 degrees Fahrenheit, it condenses into a liquid (minus 253 degrees Celsius).

The majority of stars and the sun include it, and the planet Jupiter is primarily made of it. Water has the most hydrogen on Earth. All that can be discovered of it as a gas in the air is less than 1 part per million by volume.

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The penetration of a solution into tissue is most dependent upon its solubility or the ability to dissolve in the tissue.

The ability of a solution to penetrate tissue depends on several factors, but one of the most critical characteristics is its solubility. Solubility refers to the ability of a substance to dissolve in a given solvent, in this case, the tissue. When a solution has high solubility, it can readily mix and dissolve in the tissue, allowing for efficient penetration.

Solubility is influenced by various factors such as the nature of the solute and solvent, temperature, and concentration. A solution with a high solubility in tissue will have a greater affinity for the tissue components and can effectively permeate through the tissue barriers.

In summary, the solubility of a solution plays a crucial role in determining its ability to penetrate tissue. Higher solubility enhances the solution's ability to dissolve in the tissue, facilitating better penetration and distribution of the solution within the tissue.

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The reaction between NiCl2 and Fe is a single replacement reaction. A single replacement reaction involves an element reacting with a compound to produce a new element and a new compound. This reaction follows the general equation; A + BC → AC + B.

The activity series of metals will be used to predict the products of a single-replacement reaction when NiCl2 reacts with Fe. Here are the steps involved in predicting the products of a single-replacement reaction; Steps to predicting the product of a single-replacement reaction: Identify the metal that is being displaced. Metals on the left of the activity series of metals are known to displace metals on the right of the series. This is because metals on the left are more active than those on the right.Look for the element that is being displaced. Fe is being displaced since Ni is higher than Fe in the activity series of metals. As a result, Fe will be replaced by Ni. Identify the product. The Ni metal and Fe2+ will be produced by the reaction.

NiCl2(aq) + Fe(s) → Ni(s) + FeCl2(aq)

The balanced chemical equation will be

NiCl2 + Fe → FeCl2 + Ni

The reaction between NiCl2 and Fe is a single replacement reaction. A single replacement reaction involves an element reacting with a compound to produce a new element and a new compound. This reaction follows the general equation; A + BC → AC + B.

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5 molecules of water is  5 H2O.

One water , H2O. molecule consist of one oxygen atom bonded with two atoms of hydrogen.  The structure of water molecule is bent. Water is a polar compound. Oxygen is more electronegative than the hydrogen atom. The oxygen atom get partial negative charge and the hydrogen atoms get partial positive charge. Water is a universal solvent.  The hydrogen and oxygen atoms are held together by a covalent bond . covalent bond is formed by the sharing of electrons between the two atoms. water The chemical name of water is Dihydrogen monoxide.

Thus, 5 molecules of water is  5 H2O.

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Answer:

The average rate of climb in miles per minute is 8.2x10⁻⁴ miles/min.

Explanation:

The average rate can be calculated as follows:

\( \overline{v} = \frac{y_{f} - y_{0}}{t_{f} - t_{0}} \)

Where:

\(y_{0}\): is the initial height = 24976 ft

\(y_{f}\): is the final height = 29035 ft

\(t_{0}\): is the initial time = 0

\(t_{f}\): is the final time = 15 hr, 35 min = 935 min      

Then, the average rate of climb in miles per minute is:

\( \overline{v} = \frac{y_{f} - y_{0}}{t_{f} - t_{0}} \)

\( \overline{v} = \frac{29035 ft - 24976 ft}{935 min - 0} = 4.34 \frac{ft}{min}*\frac{1 mile}{5280 ft} = 8.2 \cdot 10^{-4} miles/min \)      

Therefore, the average rate of climb in miles per minute is 8.2x10⁻⁴ miles/min.

I hope it helps you!      

Answer:

d

Explanation:

the partial charges of the molecule

The average molar bond enthalpy of the carbon-chlorine bond in a CCl₄ molecule is 338.6 kJ mol^-1.


To calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl₄ molecule, we need to use the bond dissociation enthalpy equation:
ΔH = Σ(bond enthalpies of reactants) - Σ(bond enthalpies of products)

We know that the enthalpy of formation of CCl₄ is -95.7 kJ mol^-1, which means the energy released when one mole of CCl₄ is formed from its elements. Using this information and the enthalpies of formation of carbon and chlorine, we can calculate the bond enthalpy of the carbon-chlorine bond to be 338.6 kJ mol^-1.

Similarly, for CCl₃I, we can use the same equation and the enthalpies of formation of CCl₃I, carbon, and chlorine to calculate the bond enthalpy of the carbon-chlorine bond to be 277.5 kJ mol^-1.

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Answer:

25 size or length.

Answer:

25) Length

26) P-wave

27) P-wave

28) Surface wave

29) Body wave

30) epicenter

And so many more

Answer: 8 electrons

Explanation:

Answer: 8 valence electrons

Explanation: This is because the maximum electron an energy level can hold is 8 making it a stable atom

Answer:

-96.6°C

Explanation:

Given:

        mass CCl4 = 530.0 g * (1 kg / 1000)

        mass CCl4 = 0.5300 kg

First calculate the molality (m) of the solute, which is the moles of solute divided by the kg of solvent (\(\frac{moles}{kg}\)):

molality CHCl3 = (mass moles CHCl3) / (mass CCl4 in kg)

molality CHCl3 = (1.31 mol) / (0.5300 kg)

molality CHCl3 = 2.471698m

Decrease in freezing point of solvent = (Kf) * (molality of solute)

Decrease in freezing point of CCl4 = (Kf) * (molality CHCl3)

Decrease in freezing point of CCl4 = (29.8°C/m) * (2.47m)

Decrease in freezing point of CCl4 = 73.6566°C

Then use the molality of the solute to calculate the change in freezing point and subtract the change from the original freezing point.

Freezing point of solution =

(freezing point of pure solvent) - (Decrease in freezing point)

Freezing point of solution = (-22.9°C) - (73.66°C)

Freezing point of solution = -96.6°C

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1) List what you have and what you are looking for.

P = 163.6 kPa

V = ?

n = 2.2 mol

R = 8.314

T = 37.9°C / 311.05K (immediately convert to kelvin)

2) Rearrange your formula, input values, then calculate.

\(PV = nRT\\ V=\frac{nRT}{P} \\ V=\frac{(2.2)(8.314)(311.05)}{(163.6)} \\ V=34.77599841\)

V = 35 L

Answer:

The answer is A.

Explanation:

Answer:

There are the same number of oxygen atoms in the reactants and the products

Explanation:

However the equation is not balanced

3 Ca on one side and 1 on the other

Answer:

27. Element (Because it contains all same atoms)

28. Compound (It contains atoms held together through chemical bonds)

29. Element (it contains all same atoms)

33. Mixture (It contains different atoms but they are not held together through chemical means)

34. Compound (Different atoms held together through chemical means)

35. Mixture (Mixture of elements and compounds)

30. Element (it contains all same atoms)

31. Mixture (Mixture of elements and compounds)

32. Element (Contain all same atoms although held together through chemical means they are not compounds)

The residents of Kansas were overwhelmingly opposed to the Lecompton Constitution. This was large because the document protected slavery and allowed the state government to decide whether slavery should be allowed in the new state.

The people of the state saw this as an affront to their values and democratic rights and worked to defeat the constitution in a state referendum.

After much debate and campaigning, the Lecompton Constitution was defeated by over 10,000 votes. This was a major victory for antislavery advocates, who had worked hard to make sure the constitution was rejected in Kansas.

The residents of Kansas were overwhelmingly opposed to the Lecompton Constitution. This document was drafted by pro-slavery advocates and would have made slavery a permanent institution in the state.

The citizens of Kansas were furious, and it sparked a great deal of debate and conflict. Many residents were so opposed to the document that they decided to form an independent government and reject the Lecompton Constitution in a referendum.

The referendum passed in an overwhelming majority, and the Lecompton Constitution was rejected. This event was a major milestone in the struggle for free-state rights in the Midwest and demonstrated the power of the people to resist oppressive legislation.

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