Consider the following system at equilibrium: N2 (g) + 3H2(g)--2NH3 (g) +92.94 kJ
Which changes cause it to shift to the right (products):
1) Increase in temperature 2) decrease in temperature 3)increase in volume 4) decrease in volume 5) remove some NH3 6) addsome NH3 7) remove some N2 8) add some N2
a) 1,4,6,7 b)2,3,5,8 c)1,6,8 d)1,3,5,7 e)2,4,5,8

Sodium phosphate and calcium chloride react to form calcium phosphate and sodium chloride, a balanced chemical equation is as;

2Na₃PO₄ (aq) + 3CaCl₂ (aq)  ⇒  6NaCl (aq) + Ca₃(PO₄)₂ (s)

Calcium phosphate precipitate and aqueous sodium chloride are the products that result from the reaction between two solutions of sodium phosphate and calcium chloride. It depicts the process that takes place when calcium chloride and sodium sulfate are combined. In this reaction, one molecule of calcium chloride and one molecule of sodium sulfate combine with each other to produce two molecules of sodium chloride and one molecule of calcium sulfate. The balanced chemical equation is as;

2Na₃PO₄ (aq) + 3CaCl₂ (aq)  ⇒  6NaCl (aq) + Ca₃(PO₄)₂ (s)

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(a). The rate law for the reaction between NO (g) + NO₂ (g) + O₂ (g) → N₂O₅ (g) from the given experimental data is Rate = k [NO]²[NO₂]

(b). 1. The rate constant for the reaction 0.10 M 0.10 M 0.10 M 2.1 x 10⁻² Ms⁻¹ is 2.1 x 10² L/mol.s.

2. The rate constant for the reaction 0.20 M 0.10 M 0.10 M 4.2 x 10⁻² Ms⁻¹ is 1.05 x 10² L/mol.s.

3. The rate constant for the reaction 0.20 M 0.30 M 0.20 M 1.26 x 10⁻¹ Ms⁻¹ is 1.4 x 10² L/mol.s.

4. The rate constant for the reaction 0.10 M 0.10 M 0.20 M 2.1 x 10⁻² Ms⁻¹ is 2.1 x 10² L/mol.s.

We can now substitute these values into the rate law equation and solve for the rate constant k:

For the first experiment:

Rate = k [NO]²[NO₂]

⇒ k = Rate / [NO]²[NO₂] = 2.1 x 10⁻² Ms⁻¹ / (0.10 M)²(0.10 M) = 2.1 x 10² L/mol.s

Thus, the rate constant for the initial rate reaction 2.1 x 10⁻² Ms⁻¹ is 2.1 x 10² L/mol.s

For the second experiment:

Rate = k [NO]²[NO₂] 

⇒ k = Rate / [NO]²[NO₂] = 4.2 x 10⁻² Ms⁻¹ / (0.20 M)²(0.10 M) = 1.05 x 10² L/mol.s

Thus, the rate constant for the initial rate reaction 4.2 x 10⁻² Ms⁻¹ is 1.05 x 10² L/mol.s.

For the third experiment:

Rate = k [NO]²[NO₂] 

⇒ k = Rate / [NO]²[NO₂] = 1.26 x 10⁻¹ Ms⁻¹ / (0.20 M)²(0.30 M) = 1.4 x 10² L/mol.s

Thus, the rate constant for the initial rate reaction 1.26 x 10⁻¹ Ms⁻¹ is 1.4 x 10² L/mol.s.

For the fourth experiment:

Rate = k [NO]²[NO₂] 

⇒ k = Rate / [NO]²[NO₂] = 2.1 x 10⁻² Ms⁻¹ / (0.10 M)²(0.10 M) = 2.1 x 10² L/mol.s

Thus, the rate constant for the initial rate reaction 2.1 x 10⁻² Ms⁻¹ is 2.1 x 10² L/mol.s.

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Answer:

Hydrosphere

Explanation:

Hydrosphere includes all water on the surface of the planet.

Answer:

Hydrosphere

Explanation:

cuz i said so

1,3,5-hexatriene contains three bonding molecular orbitals.

A conjugated hydrocarbon having a chain of six carbon atoms and three double bonds is known as 1,3,5-hexatriene.

The 1,3,5-hexatriene -system, which is made up of the overlapping p-orbitals of the carbon atoms engaged in the double bonds, must be taken into account in order to calculate the number of bonding molecular orbitals (MOs) in the compound.

A string of MOs is created when the electrons in a conjugated compound, like 1,3,5-hexatriene, are delocalized along the whole chain. There are two MOs one bonding molecular orbital and one antibonding molecular orbital for every double bond.

The compound 1,3,5-hexatriene contains three double bonds. Consequently, there will be three bonding molecular orbitals.

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The freezing point depression of a solution is proportional to the molality (m) of the solution, where molality is defined as the number of moles of solute per kilogram of solvent.

The more solute dissolved in a solution, the lower its freezing point will be. Based on this information, we can match the aqueous solutions with their appropriate letter from the column on the right:

0.10 m CuCl2 → C. Third lowest freezing point

0.13 m Cr(CH3COO)2 → B. Second lowest freezing point

0.17 m CuSO4 → A. Lowest freezing point

0.37 m Glucose (nonelectrolyte) → D. Highest freezing point

Explanation:

CuCl2 and CuSO4 are both strong electrolytes that dissociate completely in solution to form two ions per formula unit.

Therefore, they will have a greater effect on the freezing point depression compared to Cr(CH3COO)2, which only dissociates partially in solution.

Glucose is a nonelectrolyte and does not dissociate in solution, so it will have no effect on the freezing point depression. Therefore, it will have the highest freezing point among the given solutions.

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Answer:

Gases:

Gases can be squeezed into smaller spaces when pressure is applied.

Gases can expand to fill any available space.

Gases are light and can move easily.

Gases are used in systems that need quick and flexible movements.

Liquids:

Liquids cannot be easily squeezed into smaller spaces.

Liquids take the shape of the container they are in.

Liquids are heavier and flow more slowly.

Liquids are used in systems that require strong forces and precise control.

How these properties affect their use as fluid power mediums:

Gases are used when we want things to move quickly and easily, like in pneumatic systems (e.g., inflating balloons).

Liquids are used when we need strong forces and precise control, like in hydraulic systems (e.g., operating heavy machinery).

So, gases are good for quick and flexible movements, while liquids are better for strong forces and precise control.

Once hydroxide ions have been added, the next step in balancing a redox reaction under basic conditions is to combine hydrogen ions and hydroxide ions to form water molecules.

What is a simple definition of a redox reaction?

Any chemical reaction in which a participating chemical species experiences a change in oxidation number is referred to as an oxidation-reduction reaction or redox reaction. A broad range of procedures are included under this umbrella term.

According to the given question:

Redox reactions are those in which both reduction and oxidation occur. Redox reactions, like displacement reactions, occur when one species loses electrons while the other gains them (gaining electrons).

Once hydroxide ions have been added, the next step in balancing a redox reaction under basic conditions is to combine hydrogen ions and hydroxide ions to form water molecules.

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Answer:

See the answer below

Explanation:

In chemistry, indicators are substances that are capable of changing colors with respect to the pH. Each indicator has its characteristic color in acidic pH and another characteristic color in alkaline pH.

Methyl orange indicator appears red in acidic solution and yellow in basic solutions. Phenolphthalein is usually colorless in acidic solutions and appears pink in basic solutions. A red litmus paper will turn blue in alkaline solutions while a blue litmus paper will turn red in acidic solutions.

Answer:

m=1,48g

Explanation:

Answer:

b

Explanation:

This means that it takes more energy or heat to increase water's temperature than it does for most other substances. The specific heat of water is greater than that of dry soil, therefore water both absorbs and releases heat more slowly than land.

The final temperature of the water, given that the cube of brass heated to 95 degrees celsius was immersed in it is 80.6 °C

First, we shall determine the mass of the brass. Details below:

Mass = density × volume

Mass of brass = 88.25 × 10.684

Mass of brass = 939.686 g

Finally, we shall determine the equilibrium temperature in order to obtain the final temperature of the water. Details below:

Heat loss by brass = Heat gain water

MC(T - Tₑ) = MᵥᵥCᵥᵥ(Tₑ - Tᵥᵥ)

939.686 × 0.362 (95 - Tₑ) = 20 × 4.18(Tₑ - 22)

340.166332(95 - Tₑ) = 83.6 (Tₑ - 22)

Clear bracket

32315.80154 - 340.166332Tₑ = 83.6Tₑ - 1839.2

Collect like terms

32315.80154 + 1839.2 = 83.6Tₑ + 340.166332ₑ

34155.00154 = 423.766332Tₑ

Divide both side by 423.766332

Tₑ = 34155.00154 / 423.766332

Tₑ = 80.6 °C

Now, the equilibrium temperature is 80.6 °C

Thus, we can conclude that the final temperature of the water is 80.6 °C

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Answer:

magnesium

Explanation:

Mass of water required = 64.42 g

Given

Reaction

6CO2 + 6H2O → C6H12O6 + 6O2

157.35 g CO2

Required

mass of water

Solution

mol CO₂ = mass : MW CO₂

mol CO₂ = 157.35 g : 44.01 g/mol

mol CO₂ = 3.575

From the equation, mol ratio CO₂ : H₂O = 6 : 6, so mol H₂O = mol CO₂=3.575

Mass H₂O = mol x MW H₂O

mass H₂O = 3.575 x 18.02

mass H₂O = 64.42 g

Answer: 64.427

Explanation:

Answer:

Explanation:

Any densities less than 1g/cm3 will float, while objects with densities over 1g/cm3 will sink.

Answer:

Soil helps anchor plants and provides them essential elements of water and nutrients. Plants prevent soil erosion and provide organic matter.

Explanation:

Answer:

20

Explanation:

Hi there!

We need to find the atomic number of an atom that has 20 protons and 20 neutrons

the atomic number of an atom is equivalent to the amount of protons an atom has, as the number of protons determines what element an atom is.

Since the atom has 20 protons, the atomic number of the said atom is 20

Hope this helps!  

The maximum safe operating temperature the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

To calculate the maximum safe operating temperature, we need to consider the dimensions of the vessel, the maximum safe pressure, and the amount of gas inside.

First, let's convert the dimensions of the vessel from centimeters to meters:

Width = 48.0 cm = 0.48 m

Height = 57.6 cm = 0.576 m

Next, we need to calculate the volume of the vessel:

Volume = π * (radius)^2 * height

The radius of the vessel can be calculated as half of the width:

Radius = 0.48 m / 2 = 0.24 m

Volume = π * (0.24 m)^2 * 0.576 m

Volume ≈ 0.099 m^3

Now, we can use the ideal gas law to determine the maximum safe operating temperature. The ideal gas law is given by:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Rearranging the equation to solve for T:

T = (PV) / (nR)

To calculate the number of moles, we can use the molar mass of carbon dioxide (CO2):

Molar mass of CO2 = 12.01 g/mol (for carbon) + 2 * 16.00 g/mol (for oxygen)

Molar mass of CO2 ≈ 44.01 g/mol

Converting the mass of carbon dioxide from kilograms to grams:

Mass of CO2 = 2.45 kg * 1000 g/kg

Mass of CO2 = 2450 g

Now, we can calculate the number of moles:

Number of moles = Mass of CO2 / Molar mass of CO2

Number of moles = 2450 g / 44.01 g/mol

Number of moles ≈ 55.67 mol

The gas constant R is approximately 8.314 J/(mol·K).

Now, we can substitute the values into the equation:

T = (3.40 MPa * 0.099 m^3) / (55.67 mol * 8.314 J/(mol·K))

T ≈ 1063.77 K

Converting from Kelvin to Celsius:

T ≈ 1063.77 °C

The maximum safe operating temperature that the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

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The two statements that apply about boiling water on Venus are:

What impact does pressure have on boiling point?

Because the boiling point is the point at which the vapour pressure equals or exceeds the atmospheric pressure, the amount of energy needed to boil a liquid increases as pressure increases.

Explanation:

According to the definition given earlier, anything reaches its boiling point when its vapour pressure reaches or exceeds that of the atmosphere. More and more particles have the energy to transition into the gas phase as temperature rises. As a result, the liquid boils as the vapour pressure rises to equal or higher than atmospheric pressure.

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Question:

The planet Venus is surrounded by a thick layer of gases. In fact, the atmospheric pressure on Venus is over 90 times greater than the atmospheric pressure on Earth. Which statements are true about boiling water on Venus? Choose the two (2) statements that apply.

A. The temperature of water will remain constant while it boils.

B. Water will boil at a higher temperature on Venus than on Earth.

C. Water will boil at a lower temperature on Venus than on Earth.

D. The temperature of water will increase as it boils.

The pH of the solution is 9.92,  The pH of a solution involves calculating the concentration of hydrogen ions in the solution

Sr(OH)2 (s) → Sr2+ (aq) + 2 OH- (aq)The next step is to calculate the concentration of hydroxide ions in the solution using the stoichiometry of the balanced equation. We are given that 1.03×10−6 moles of Sr(OH)2 are dissolved in 25.0 mL of solution, so we can use the following equation to calculate the concentration of hydroxide ions:[OH-] = 2 × (1.03×10−6 mol)/(0.0250 L) = 8.24×10−5 M

Finally, we can use the relationship between the concentration of hydroxide ions and the concentration of hydrogen ions in water to calculate the pH of the solution:pOH = -log[OH-] = -log(8.24×10−5) = 4.08pH = 14 - pOH = 14 - 4.08 = 9.92

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Answer:

A 3 meters

Explanation:

A crest of the wave is the highest peak in the wave that shows the maximum displacement value. The intersection of the 3-meter and 2-meter waves results in amplitude of 1 meter. Thus, option D is correct.

The amplitude of the wave is the measurement of the wave from the still position towards the crest or the trough of the wave. It is estimated in meters.

The elevation of the wave is at 3, and the depression is at 2 meters when intersected, which results in an amplitude causing destructive interference. As 3 m is above the baseline and 2 m is below the baseline the resulting amplitude will be, 3 - 2 = 1 m.

Therefore, the resulting amplitude is 1 meter.

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Answer:

When baking soda is mixed with vinegar, something new is formed. The mixture quickly foams up with carbon dioxide gas. If enough vinegar is used, all of the baking soda can be made to react and disappear into the vinegar solution.

Explanation:

The two portions on this module for which we can broaden unit elements to do dimensional analysis with chemical materials are volume and mass.

volume is a degree of the quantity of three-dimensional space occupied by using an object or substance. it's miles regularly measured in liters, cubic centimeters, or cubic meters. volume is used to measure the potential of a field, the dimensions of an object, or the quantity of liquid or gas in a given space. it's also used to determine the mass of an item, because the density (mass in line with unit quantity) is often acknowledged.

the 2 portions of volume and mass are critical for doing dimensional analysis with chemical substances because they help to measure the amount of a substance in distinct gadgets. extent is vital for measuring the quantity of liquid materials, and mass is critical for measuring the quantity of strong substances. each of these portions are vital for accurate and specific measurements of chemical substances, making them crucial for dimensional analysis.

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The best thing Ka can do next to determine the objectivity of the source is conduct an internet search for cardiac problems + omega-3 fats. Thus option C is correct.

Cardiac problems are defined as the problems that occurs in heart and blood vassals of heart.

The common cardiac problems are

A significant family of polyunsaturated fats is the omega-3 family.

Thus, the best thing Ka can do next to determine the objectivity of the source is conduct an internet search for cardiac problems + omega-3 fats. Thus option C is correct.  

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Answer:

it is A.

Explanation:

determine whether the evidence cited reflects more than one side

The electrical potential of K+ is -98.88 mV if K (outside) / K (inside) = 4.65 / 155mM and the resting potential inside the cell is -90mV; and the K+ ion will flow out of the cell.

The electrical potential is the amount of work required to move a unit of charge from one location to another, separated by a distance, and affected by the electrical field. Electrical potential can be defined as the potential energy per unit charge; the more charge that moves through the potential, the greater the potential difference. The unit for electrical potential is volts (V).

Potential Difference (V) is calculated using the following equation:ΔV = (Vm)in – (Vm) outwhere ΔV is the potential difference across the membrane; (Vm)in is the potential inside the membrane; and (Vm) out is the potential outside the membrane. Electrical potential of K+Electrical potential of K+ is calculated using the Nernst equation:

EK = (RT/zF) × ln ([K]out/[K]in)EK = electrical potential of K+;

R = universal gas constant = 8.314 J/(mol.K);T = temperature = 37 °C = 310.15 K; z = charge of ion; F = Faraday's constant = 96500 C/mol; [K]out = concentration of K+ outside the cell;[K]in = concentration of K+ inside the cell. Substituting all the values in the above formula, we get;EK = (8.314 × 310.15) / (1 × 96500) × ln(4.65/155)EK = -98.88 mV Thus, the electrical potential of K+ is -98.88 mV.

Determine the direction of K+ flow in / out / equilibrium K+ will flow out of the cell. The reason is that the concentration gradient favors the outward flow of K+ ions. K+ is at a higher concentration inside the cell and a lower concentration outside the cell; hence, the ion will flow out of the cell.

The concentration of K+ inside the cell is 155 mM, and the concentration of K+ outside the cell is 4.65 mM; thus, the concentration gradient is favorable for the outward movement of K+ ions.

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The group with a high-energy linkage in the activated carriers NADH, NADPH, and FADH₂ is hydrogen and electrons. Option A is correct.

These molecules are involved in redox reactions, which transfer electrons from a donor molecule (such as glucose) to an acceptor molecule (such as oxygen), releasing energy that can be used to generate ATP. NADH, NADPH, and FADH₂ all carry high-energy electrons that can be used to power ATP synthesis through oxidative phosphorylation.

The other groups listed (phosphate, carboxyl, methyl, glucose, and acetyl) are important in metabolism but do not have high-energy linkages like hydrogen and electrons.

Hence, A. Hydrogen and electrons is the correct option.

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