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Paraphin [41]
2 years ago
15

Answer pls ASAP will mark the brainliest

Chemistry
2 answers:
harina [27]2 years ago
6 0
First one……………………………….
kykrilka [37]2 years ago
5 0

For me that is the first :

Both the identity and the properties of a substance change.

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A sample of gas occupies 7.80 liters at 425=C2=B0C? What will be the volume= of the gas at 35=C2=B0C if the pressure does not ch
luda_lava [24]

To solve this we assume that the gas inside the balloon is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

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7 0
2 years ago
Hydrogen peroxide, H2O2, decomposes according to the equation above. This reaction is thermodynamically favorable at room temper
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4H₂O₂ → 4H₂O + 2O₂

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2H₂O₂ → 2H₂O + O₂

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In a related diagram, we have 4 molecules of hydrogen peroxide decomposing, therefore we have;

4H₂O₂ → 4H₂O + 2O₂

The attached diagram shows the products of the decomposition of the four molecules of hydrogen peroxide.

4 0
3 years ago
Understand the Relationship Between the Structure of Alcohol and Their physical Properties Question Which of the following alcoh
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Answer:

Ethanol most easily forms hydrogen bonds.

Explanation:

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The figure attached shows the alcohol structures.

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Delta H for each reaction ty!
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What causes London dispersion forces?
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The London Dispersion force is a temporary attratctive force that results when the electrons in 2 adjacent atoms occupy position that makes the atom form temporary dipoles.
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