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777dan777 [17]
4 years ago
6

A solution of salt water is boiled. The water evaporates and solid salt remains. Which statement is true?

Chemistry
1 answer:
Scorpion4ik [409]4 years ago
4 0
C because neither the water or salt have changed their molecular structure. H2O is still H2O and NaCl is still NaCl.
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A steel bottle contains argon gas at STP. What is the final pressure if the temperature is changed to 115°C?
Lorico [155]

Answer:

Final pressure is 1.42atm

Explanation:

Based on Gay-Lussac's law, pressure of a gas is directely proportional to its absolute temperature. The equation of this law is:

P₁T₂ = P₂T₁

<em>Where P is pressure and T is absolute temperature of 1, initial state and 2, final state of the gas.</em>

In the problem, initial conditions are Standard Temperature and Pressure, STP, that are 1 atm and 273.15K.

If the final temperature is 115°C = 388.15K (115°C + 273.15 = 388.15K), using Gay-Lussac's law:

P₁T₂ = P₂T₁

1atmₓ388.15K = P₂ₓ273.15K

1.42atm = P₂

<h3>Final pressure is 1.42atm</h3>

<em />

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4 0
3 years ago
Assasssssssssiiiijjjjjhhhhhi
Stels [109]
C would be the correct answer
6 0
3 years ago
Why does grinding solid crystals increase the rate of dissolving for a solid solute in water? smaller crystals are more polar. s
Sedbober [7]

Answer:

The answer is...

Explanation:

Smaller crystals have more surface area.

4 0
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