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Anastaziya [24]
2 years ago
13

A student conducts an experiment to determine how the addition of salt to water affects the density of the water. The student fi

lls 3 beakers with equal amounts of water. He then adds 1 cup of salt to the first beaker, 2 cups of salt to the second beaker and no salt to the third beaker. What is the dependent variable in the student's investigation?
1)The amount of salt in the water.

2)The temperature of the water.

3)The density of the water.

4)The ph of the water.
Chemistry
2 answers:
Alina [70]2 years ago
8 0
3) The density of the water depends on the amount of salt on the water, therefore it is the
dependent variable
raketka [301]2 years ago
3 0

Answer:

vyb tftrdf5rdv

Explanation:

ghyttg

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As we know that:

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The relation between  pressure and number of moles of gas will be:

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where,

P_1 = initial pressure of gas = 24.5 atm

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Now put all the given values in the above expression, we get:

\frac{24.5atm}{5.30atm}=\frac{1.40mol}{n_2}

n_2=0.301mol

Therefore, the final number of moles of gas that withdrawn from the tank to lower the pressure of the gas must be, 0.301 mol.

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