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topjm [15]
3 years ago
10

PLEASE HELP ILL GIVE BRAINLIEST

Chemistry
1 answer:
hodyreva [135]3 years ago
5 0

Answer:

c

Explanation:

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The solubility of oxygen in lakes high in the Rocky Mountains is affected by the altitude. If the solubility of O2 from the air
IceJOKER [234]

Answer:

1.75\cdot 10^{-4} M

Explanation:

Henry's law states that the solubility of a gas is directly proportional to its partial pressure. The equation may be written as:

S = k_H p^o

Where k_H is Henry's law constant.

Our strategy will be to identify the Henry's law constant for oxygen given the initial conditions and then use it to find the solubility at different conditions.

Given initially:

S_1 = 2.67\cdot 10^{-4} M

Also, at sea level, we have an atmospheric pressure of:

p = 1.00 atm

Given mole fraction:

\chi_{O_2} = 0.209

According to Dalton's law of partial pressures, the partial pressure of oxygen is equal to the product of its mole fraction and the total pressure:

p^o = \chi_{O_2} p

Then the equation becomes:

S_1 = k_H \chi_{O_2} p

Solve for k_H:

k_H = \frac{S_1}{\chi_{O_2} p} = \frac{2.67\cdot 10^{-4} M}{0.209\cdot 1.00 atm} = 0.001278 M/atm

Now we're given that at an altitude of 12,000 ft, the atmospheric pressure is now:

p = 0.657 atm

Apply Henry's law using the constant we found:

S_2 = k_H \chi_{O_2} p = 0.001278 M/atm\cdot 0.209\cdot 0.657 atm = 1.75\cdot 10^{-4} M

8 0
3 years ago
1 A 3.80 g sample of bronze was dissolved in sulphuric acid. The copper in alloy reacted with
s344n2d4d5 [400]

Answer:

yeyeye

Explanation:

hi and bye  no problem you will come and die

3 0
3 years ago
In a 0.737 m solution, a weak acid is 12.5% dissociated. calculate ka of the acid.
r-ruslan [8.4K]
Hello! Let me try to answer this :)

Thanks and please correct if there are any mistakes ^ ^

8 0
3 years ago
HELPPPP PLEASEEE
Igoryamba
Atomic mass is the answer!!
Explanation: An elements atomic number won’t be able to change
6 0
3 years ago
The force against a solid object moving through a gas or a liquid
statuscvo [17]

A force or a type of friction?

Force: Resistance--> If you go swimming, you feel the water pushing against you, making it harder to walk in water and even to swim unless you are doggy pattling or front strokes. Resistance is a force going against a solid object.

Friction: Fluid friction which is friction that occurs after a solid object travels through a liquid or gas

5 0
3 years ago
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