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seraphim [82]
2 years ago
11

What happens during evaporation? A liquid changes to a gas. A liquid changes to a solid. A gas changes to a liquid. A solid chan

ges to a liquid.
Chemistry
1 answer:
Valentin [98]2 years ago
4 0

Answer:

A liquid changes to gas

Explanation:

"Evaporation is the process by which water changes from a liquid to a gas or vapor. Evaporation is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor."

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What is chemical reaction​
yan [13]
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
3 0
3 years ago
Read 2 more answers
You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration
vovangra [49]

<u>Ans: Acetic acid = 90.3 mM and Sodium acetate = 160 mM</u>

Given:

Acetic Acid/Sodium Acetate buffer of pH = 5.0

Let HA = acetic acid

A- = sodium acetate

Total concentration [HA] + [A-] = 250 mM ------(1)

pKa(acetic acid) = 4.75

Based on Henderson-Hasselbalch equation

pH = pKa + log[A-]/[HA]

[A-]/[HA] = 10^(pH-pKa) = 10^(5-4.75) = 10^0.25 = 1.77

[A-] = 1.77[HA] -----(2)

From (1) and (2)

[HA] + 1.77[HA] = 250 mM

[HA] = 250/2.77 = 90.25 mM

[A-] = 1.77(90.25) = 159.74 mM



7 0
4 years ago
why do you think that sodium chloride has to be heated to 800c before melting, but candle wax will start to melt at 50c?
RideAnS [48]

Answer:

Sodium chloride is an ionic compound which makes it stronger and have a higher melting and boiling point. Candle wax is a covalent compound so it has a low melting point.

Explanation:

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5 0
3 years ago
lactic acid, which consists of C, H, and O, has long been thought to be responsible for muscle soreness following strenuous exer
Minchanka [31]

Answer:

C3H6O3

Explanation:

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3 0
3 years ago
How many molecules of H2O are equivalent to 97.2g H2O
Marta_Voda [28]

Answer:

3.25×10²⁴ molecules

Explanation:

From the question given above, the following data were obtained:

Mass of H₂O = 97.2 g

Number of molecule of H₂O =?

From Avogadro's hypothesis, we understood that:

1 mole of H₂O = 6.02×10²³ molecules

Next, we shall determine the mass of 1 mole of H₂O. This can be obtained as follow:

1 mole of H₂O = (2×1) + 16

= 2 + 16

= 18 g

Thus,

18 g of H₂O = 6.02×10²³ molecules

Finally, we shall determine the number of molecules in 97.2 g of H₂O. This can be obtained as follow:

18 g of H₂O = 6.02×10²³ molecules

Therefore,

97.2 g of H₂O = 97.2 × 6.02×10²³ / 18

97.2 g of H₂O = 3.25×10²⁴ molecules

Thus, 97.2 g of H₂O contains 3.25×10²⁴ molecules.

4 0
3 years ago
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