50 POINTS!!!!!!
Reactions that occur spontaneously must reach an energy threshold before they can proceed. The graph shows the amount of energy needed for a reaction to occur. Explain how enzymes are involved in this reaction and can affect the rate of this reaction.

In the formation of NH₃, -22 kcal are released when 6.0 moles of H₂ react.

Let's consider the thermochemical equation for the formation of ammonia.

3 H₂(g) + N₂(g) → 2 NH₃(g) ΔH = - 11 kcal

As we can see, 11 kcal are released when 3 moles of H₂ react. The heat released when 6.0 moles of H₂ react is:

[tex]6.0molH_2 \times \frac{(-11kcal)}{3molH_2} = -22kcal[/tex]

In the formation of NH₃, -22 kcal are released when 6.0 moles of H₂ react.

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Answer:

germanium (Ge)

Explanation:

both belong to the same group

Answer:

A. germanium (Ge)

Answer:

Atomic mass

Explanation:

It is the unit used o express atomic and molecular weights.

Answer:

the 3rd option is the answer

Answer is B are kinds of physical change.

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 1892.6 g

volume = 200 mL

We have

[tex]density = \frac{1892.6}{200} \\ = 9.463[/tex]

We have the final answer as

Hope this helps you

Explanation:

100cm = 1m

1cm=1/100 m

175cm = 175/100 m = 1.75m.

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If a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.

A metric system may be defined as a type of system that significantly weighs and measures the mass and distance respectively in which the meter is the unit of length and the kilogram is the unit of weight.

A metric system is a standard system of measurement which utilizes the meter, liter, and gram as base units of length for distance, capacity for volume, weight for mass, etc.

According to the question, the height of a student in cm = 175 cm.

Then, from the general conversion rule,

1 meter = 100 cm.

1 cm = 1/100 meter.

175 cm. = 175/100 = 1.75 meters.

Therefore, if a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.

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Answer:

Copper is a metal made up of copper atoms closely packed together. As a result, the electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons because they help copper be a good conductor of heat and electricity.

Explanation:

Explanation:

Acids are substances whose ph is lower than 7.Acids react with most metals to form a salt and hydrogen gas.

Answer:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation:

Answer:

H2O2 + H2S → 2H2O + S? that is the answer

Answer:

The density of the object is 0.32gcm3.

Explanation:

hope this helps

Answer:

lol

Explanation:

Answer:

the value of water is 1000

Answer:

A blanket

Explanation:

bottom layer is a nice comfy blanket you could use to sleep with

Explanation:

Something comfy you can use for yourself or others.

Answer:

I don't know what your asking

Answer:

false

Explanation:

The particles are held together too strongly to allow movement from place to place but the particles do vibrate about their position in the structure. With an increase in temperature, the particles gain kinetic energy and vibrate faster and more strongly

Answer:

A substance that neutralizes an acid is generally called a base and the basic substances that are soluble in water and alkali and the properties of alkalis are due to these hydroxide ions(OH−). ... - Thus, conclusively it can be said that all alkalis are bases but all bases are not alkali.

Answer:

This is false

Explanation:

it is actually the opposite, all bases don't dissolve in water, but alkali is a base that does dissolve in water. So, alkalis are bases, but not all bases are alkalis

Pinky, message in one of my answers that doesn't have an comment on pls.. i wish i can tlk to u.. but this new system in brainly.. oof

Answer:

A

Explanation:

Answer:

Proxies enable scientists to recreate climate conditions in different parts of history.

Explanation:

Proxies are characteristics of the weather in a certain period of time that have been preserved for different weather measurements like temperature, humidity, wind direction, and amounts of precipitation. The reason scientists create proxies because it "enables them to recreate climate conditions from different parts of time to have a better understanding on what weather was like during that time period."

Hope this helps.

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A. Chloride ions (CI)

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Answer:

True

Explanation:

Halogens are very stable because they have a full outer shell of 8

true or false?

Brainiest plz and hope this answer helped let me know if you need any more help I am glad to help!

It's true!

Answer:

Sorry I don't know.

Explanation:

I'm in 8th grade.

Washing clothes

linking a brake pedal to the brake pads at the wheels of a car

dissolving sugar

painting a wall

Explanation:

you will divide 36 by 1 and multiply 2 on both sides which makes 72 by 2 so 2into 1 is 2 and 2 into 36 is 72

Answer:

The boiling point wouldn´t be effected. The amount of time it would take to get it to that point would increase

Explanation:

Answer:

Explanation:

I hope you help by my answee