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quester [9]
2 years ago
13

What coefficients are needed to balance the following:

Chemistry
1 answer:
lilavasa [31]2 years ago
8 0
The answer to this question is D. 3,2,3,2
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What differences do you notice when you heat up the brick and the iron at same temperature?
Tpy6a [65]

After heating the brick and the iron, it is observed that the brick heats up quicker and the brick releases energy quicker.

<h3>What is thermal energy?</h3>

Thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.

The iron has more energy than the brick even though it is at the same temperature. That means that the iron must have more particles than the brick.

Iron and brick are both solids and have the same volume, so the difference in total energy must be due to atomic composition.

Learn more about thermal energy here:

brainly.com/question/14506133

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5 0
2 years ago
Which represents an endothermic reaction? wood burning in a fire splitting a gas molecule changing frost to water vapor TNT expl
scoundrel [369]

Answer:

changing frost into water vapors.

Explanation:

8 0
4 years ago
Read 2 more answers
Which of the following is/are true concerning a chemical reaction at equilibrium? 1. The system will be a mixture of reactant an
maks197457 [2]

Answer: Option (e) is the correct answer.

Explanation:

An equilibrium reaction is defined as the reaction where rate of forward reaction will be equal to the rate of backward reaction.

For example, N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g)

So, here amount of reactants that is, nitrogen gas and hydrogen gas  will be constant along with constant amount of formation of product that is, ammonia here.

In an equilibrium reaction there is presence of both reactants and products and hence, both reactants and products constitute the system.

Thus, we can conclude that all the given statements are true.

5 0
3 years ago
The small bags of silica gel you often see in a new shoe box are placed there to control humidity. Despite its name, silica gel
Lilit [14]

Answer:

The sign of \Delta GΔG is negative.

The sign of \Delta HΔH is negative.

The sign of \Delta SΔS is negative.

Explanation:

The water vapor is adsorbed on silica gel due to strong hydrophilicity of silica get towards the water.

The thermodynamic properties of adsorbate and adsorbent changes after adsorption. Silica gel is very porous and hydrophilic, thus, it absorbs the water from the shoe box.

The adsorption process occurs spontaneously, therefore Delta G < 0.

When adsorption occurs, bonds are formed between water molecules and SiO2, and the bond formation process is exothermic (heat is released).

Thus, Delta H < 0.

The water molecules become immobilized on the surface when adsorption occurs, thus, entropy/disorder decreases.

So, Delta S < 0.

8 0
3 years ago
The periodic table contains information about which types of matter?
stiv31 [10]
B. elements
It's called the periodic table (of the elements)
7 0
3 years ago
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