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Feliz [49]
3 years ago
8

Which of the following reactions is endothermic?

Chemistry
2 answers:
ohaa [14]3 years ago
4 0

The answer is D

Hope that helps :)

-Asmaa Ghazzawi

aivan3 [116]3 years ago
3 0

Thermic is referring to heat. So, an endothermic reaction would be absorbing heat while an exothermic reaction would be exerting heat. All of the answers except D exert heat. Mixing the Epsom salt into water would be absorbing heat.

The answer is D.) mixing Epsom salt in water

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What 3 things drive the pressure of a gas up
Sedaia [141]

Answer:

<h3>Density of the Gas</h3>

Explanation:

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4 0
2 years ago
Equation is balanced already
mojhsa [17]

Answer:

1.) 13 g C₄H₁₀

2.) 41 g CO₂

Explanation:

To find the mass of propane (C₄H₁₀) and carbon dioxide (CO₂), you need to (1) convert mass O₂ to moles O₂ (via molar mass), then (2) convert moles O₂ to moles C₄H₁₀/CO₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles C₄H₁₀/CO₂ to mass C₄H₁₀/CO₂ (via molar mass). It is important to arrange the ratios in a way that allows for the cancellation of units. The final answers should have 2 sig figs to match the sig figs of the given value.

Molar Mass (C₄H₁₀): 4(12.011 g/mol) + 10(1.008 g/mol)

Molar Mass (C₄H₁₀): 58.124 g/mol

Molar Mass (CO₂): 12.011 g/mol + 2(15.998 g/mol)

Molar Mass (CO₂): 44.007 g/mol

Molar Mass (O₂): 2(15.998 g/mol)

Molar Mass (O₂): 31.996 g/mol

2 C₄H₁₀ + 13 O₂ ----> 8 CO₂ + 10 H₂O

 48 g O₂             1 mole             2 moles C₄H₁₀            58.124 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  13 g C₄H₁₀

 48 g O₂             1 mole               8 moles CO₂            44.007 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  41 g CO₂

6 0
1 year ago
If a substance changes color, what has most likely happened
BabaBlast [244]

say for example, the color of our blood inside the body is blue, when you have a cut, th he blood color is red through oxygenation.

5 0
3 years ago
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Answer:

Explanation:

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5 0
3 years ago
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How is 1 hectoliter different from 1 kiloliter?
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1 hectoliter is 26.4172

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