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Svet_ta [14]
3 years ago
11

Please help ill give you a 100 points! Its urgent!! Q^Q

Chemistry
2 answers:
Sergio [31]3 years ago
8 0

Answer:

1. C.

Explanation:

djyliett [7]3 years ago
7 0

Answer:

?

Explanation:

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When you dissolve an antacid tablet in water and it produces bubbles, what kind of change is this?
prisoha [69]

Answer: B. a chemical change

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3 years ago
For the decomposition of calcium carbonate, consider the following thermodynamic data (Due to variations in thermodynamic values
In-s [12.5K]

Answer : The temperature in kelvins is, T>1108.695K

Explanation : Given,

\Delta H = 178.5 KJ/mole = 178500 J/mole

\Delta S = 161.0 J/mole.K

Gibbs–Helmholtz equation is :

\Delta G=\Delta H-T\Delta S

As per question the reaction is spontaneous that means the value of \Delta G is negative or we can say that the value of \Delta G is less than zero.

\Delta

The above expression will be:

0>\Delta H-T\Delta S

T\Delta S>\Delta H

T>\frac{\Delta H}{\Delta S}

Now put all the given values in this expression, we get :

T>\frac{178500J/mole}{161.0J/mole.K}

T>1108.695K

Therefore, the temperature in kelvins is, T>1108.695K

7 0
3 years ago
Explain the term respiration and how this process increases the percentage of carbon dioxide in the atmosphere.
sammy [17]

Answer:

Please find the explanation to this question below.

Explanation:

4 0
3 years ago
What would you need to lower to change a gas to a liquid
IrinaVladis [17]

The temperature or the average kinetic energy of the molecules

5 0
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What do you look at to tell the reactivity of an atom?
tia_tia [17]

Answer:

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

Explanation:

I hope this helped!

8 0
3 years ago
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