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3 years ago

What makes a solution saturated?

Chemistry

2 answers:

denis-greek [22]3 years ago

8 0

Answer: A solution that contains a maximum amount if solute that is capable of being dissolved

Explanation:

A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved.

Dmitry [639]3 years ago

7 0

Answer:

maximum amount of solute that is capable of being dissolved

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True or false: Nonmetals are good conductors of electricity?

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False

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A police car is approaching the corner. Explain what happens to the frequency of sound as it draws closer. What will you hear?

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The frequency stays the same it just gets louder

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3 years ago

Balance the equations

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1. 2 H2 + O2 = 2 H2O

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3 years ago

A gas used to extinguish fires is composed of 75 % CO2 and 25 % N2. It is stored in a 5 m3 tank at 300 kPa and 25 °C. What is th

tatyana61 [14]

Answer : The partial pressure of the $CO_2$ in the tank in psia is, 32.6 psia.

Explanation :

As we are given 75 % $CO_2$ and 25 % $N_2$ in terms of volume.

First we have to calculate the moles of $CO_2$ and $N_2$ .

$\text{Moles of }CO_2=\frac{\text{Volume of }CO_2}{\text{Volume at STP}}=\frac{75}{22.4}=3.35mole$

$\text{Moles of }N_2=\frac{\text{Volume of }N_2}{\text{Volume at STP}}=\frac{25}{22.4}=1.12mole$

Now we have to calculate the mole fraction of $CO_2$ .

$\text{Mole fraction of }CO_2=\frac{\text{Moles of }CO_2}{\text{Moles of }CO_2+\text{Moles of }N_2}$

$\text{Mole fraction of }CO_2=\frac{3.35}{3.35+1.12}=0.75$

Now we have to calculate the partial pressure of the $CO_2$ gas.

$\text{Partial pressure of }CO_2=\text{Mole fraction of }CO_2\times \text{Total pressure of gas}$

$\text{Partial pressure of }CO_2=0.75mole\times 300Kpa=225Kpa=225Kpa\times \frac{0.145\text{ psia}}{1Kpa}=32.625\text{ psia}$

conversion used : (1 Kpa = 0.145 psia)

Therefore, the partial pressure of the $CO_2$ in the tank in psia is, 32.6 psia.

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3 years ago

Which of the following are true for an element? (i)Atomic number= number of protons + number of electrons (ii)Mass nu

fredd [130]

Answer:

ii and iv 

Explanation:

atomic mass is the sum of protons and neutrons

protons ( postively charged) usually have the same number like electrons( negatively charged)

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2 years ago