The chart shows the path reactants take to become products. Which statement best describes the chart? A. Heat was removed from the activation energy to create the product. B. Heat was added to create the product. C. The products have less energy than the reactants. D. The products have the same energy as the reactants.

Answers

Answer 1

Answer:

Answer:

Explanation:

The final position of the curve is higher than the original height of the curve, meaning the products have more energy than the reactants.

Hence energy was added for the reactants to become the products. This is why the reaction is endothermic, because the products retained some of the supplied energy.

Part of the energy supplied was used to overcome the activation energy (the peak of the curve). However, this extra energy is recuperated as heat once the product is formed.

Answer 2

Answer:

B-

Heat was added to create the product

Explanation:

Just did the quiz on edg

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Answers

Answer:

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Explanation:

A 700.0 mL gas sample at STP is compressed to a volume of 200.0 mL, and the temperature is increased to 30.0 degrees Celsius. What is the new pressure of gas at kPa?

Answers

According to the ideal gas law, there is equation PV=nRT. So the same gas has the relationship of P1V1/T1=P2V2/T2. The unit of temperature is K. Then the answer is 385.4 kPa.

Final answer:

Using the combined gas law, we find that the new pressure of the gas sample, after it's compressed and heated, is approximately 353.8 kPa.

Explanation:

The subject of this question is gas laws, specifically the combined gas law which states that the ratio of the product of pressure and volume and the absolute temperature of a gas is constant. We apply this law to calculate the new pressure of the gas sample. Starting from the conditions of STP (Standard Temperature and Pressure, defined as 273.15 K and 1 atm i.e., 101.325 kPa), the volume of gas is decreased from 700.0 mL to 200.0 mL and the temperature is increased from 273.15 K to 30.0 degrees Celsius (or 303.15 K in absolute terms).

We set up the equation P1*V1/T1 = P2*V2/T2, where P1 = 101.325 kPa, V1 = 700.0 mL, T1 = 273.15 K, V2 = 200.0 mL, and T2 = 303.15 K. Plugging in these numbers and solving for P2 (the new pressure), we get P2 = P1*V1*T2 / (T1*V2) = 101.325 kPa * 700.0 mL * 303.15 K / (273.15 K * 200.0 mL) = approximately 353.8 kPa.

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Methanogens usually require Choose one: A. acidic conditions. B. methane as a substrate. C. high temperatures. D. association with bacterial species.

Answers

Answer:

D. association with bacterial species.

Explanation:

Methanogens -

These are the organisms , that falls under the category of the prokaryotes , in the domain archaea .

Methanogens are a type of microorganism , which is capable to produce methane as one of the by product during a hypoxic condition .

These organisms are found in the wetland , inside the digestive system of the humans and animals .

They have an important space for the treatment of the anaerobic wastewater .

Hence , from the question ,

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Answers

best answer is C. your welcome

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