3 years ago

An ________ is the smallest unit of matter that cannot be broken down chemically into simpler substances.

Chemistry

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

The answer is atom because it cannot be broken down into small substances

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the teacher prepares 2.50 liters (l) of a salt solution for a class experiment. how many quarts (qt) are in 2.50 l? (1 l =1.06 q

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The amount of quarts in 2.50 L is 2.65 qt

<h3>How many quarts are in 2.50 l?</h3>

Since the teacher prepares 2.50 liters of salt solution for a class experiment, we require how many quarts there are in 2.50 liters.

Since we know that 1 L = 1.06 qt, converting liters to quarts, we have

2.50 L = 2.50 × 1 L

= 2.50 × 1.06 qt

= 2.65 qt

So, the amount of quarts in 2.50 L is 2.65 qt

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Calculate the volume of .5 molecsample of gas at 140 k and a pressure of 1.2 atm

nlexa [21]

582 ml is the volume of gas.

Answer:

Explanation:

Using the ideal law of gases, the kinetic theory of gas can be stated as

PV = nRT

Here P is the pressure and it is given as 1.2 atm, V is the volume, which we need to find. Then R is the gas constant and T is the temperature while n is the concentration present.

As per the give question, P = 1.2 atm, T = 140 K and n = 0.5 moles, R = 8.314

V = $\frac{nRT}{P}$

V = $\frac{(0.5*8.314*140}{1.2}= 582 l.$

So 582 ml is the volume of gas.

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