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3 years ago

If we read the reaction as X + Y → Z + Q it is A. endothermic B. exothermic

Chemistry

2 answers:

Korvikt [17]3 years ago

4 0

As you can see in the picture we have +ΔH so that means for this reaction we need to GET heat. so the answer is A. endothermic :))
i hope this is helpful
have a nice day

kupik [55]3 years ago

3 0

Answer: The given reaction is a type of endothermic reaction.

Explanation:

There are 2 types of reaction classified on the basis of heat released or absorbed:

1. Exothermic reactions: In these reactions, the heat is released because the energy of products is less than the energy of the reactants. $\Delta H$ for these reactions is negative.

2. Endothermic reactions: In these reactions, heat is absorbed by the reactants because the energy of the products is more than the energy of the reactants. $\Delta H$ for these reactions if positive.

In the given question, the energy of the products is greater than the energy of the reactants. Hence, this is considered as a type of endothermic reaction.

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miv72 [106K]

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3 years ago

Explain what happens to the average kinetic energy thermal energy and temperature of a substance when the particles in the subst

kkurt [141]

The average kinetic energy and thermal energy decreases, and the temperature decreases as well.

8 0

3 years ago

Read 2 more answers

The temperature of a sample of matter is a measure of the ?

Masteriza [31]

Answer: the average kinetic energy of the particles.


Jusitification:


Temperature and heat energy are closely related.


While heat is the kinetic energy of the particles of a substance which is transferred from a hotter substance to a cooler one, the temperature is a measure of the average kinetic energy of the particles in a substance.


The relatively high kinetic energy the particles of a warm substance is transferred to the cooler one by the motion (vibration or translation) of the atoms of molecules. The energy transferred is heat energy.

3 0

3 years ago

A chemist measures the energy change ΔH during the following reaction: C3H8 (g) +5O2 (g) →3CO2 (g) +4H2O (l) =ΔH−2220.kJ Use the

statuscvo [17]

Answer:

The reaction is exothermic.

Yes, released.

The heat released is 4,08x10³ kJ.

Explanation:

For the reaction:

C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)

The ΔH is -2220 kJ, As ΔH is <0, The reaction is exothermic.

As the reaction is exothermic, the heat of the reaction will be released.

The heat released in 81,0g is:

81,0g C₃H₈× $\frac{1mol}{44,1g}$ × $\frac{2220kJ}{1mol}$ = 4,08x10³ kJ

-Using molar mass of C₃H₈ to convert mass to moles and knowing that there are released 2220 kJ per mole of C₃H₈-

I hope it helps!

3 0

3 years ago

Which representative element has the largest atomic radius ?

Vikki [24]

Answer:

francium

Explanation:

the atomic radius increases from top to bottom in a group, and decreases from left to right across a period.

7 0

3 years ago