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3 years ago

A sample has a mass of 7.412 grams and a volume of 0.217 liters. What is the density of this sample?

Chemistry

1 answer:

Sever21 [200]3 years ago

3 0

Answer : The density of a sample is, 34.2 g/L

Explanation :

Density : It is defined as the mass contained per unit volume.

Formula used for density :

$Density=\frac{Mass}{Volume}$

Given :

Mass of a sample = 7.412 grams

Volume =0.217 L

Now put all the given values in the above formula, we get the density of a sample.

$Density=\frac{7.412g}{0.217L}=34.2g/L$

Therefore, the density of a sample is, 34.2 g/L

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Answer:

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First we use PV=nRT to calculate the number of N₂ moles that need to be produced:

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4 0

3 years ago

1. A weather balloon is filled with helium on a cool morning when the temperature is 13.0°C. The temperature is predicted to rea

azamat

Answer:

Number of moles: n = 1.29 moles

If the temperature reaches 35°C which is 308.15 K the balloon will burst

Explanation:

Using the formula: PV = nRT

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In order to know which R to use, just take a look at the units. If you are given the pressure in atm, then use 0.08206 atm L/mol K. If you are given energy in Joules instead, then use 8.314 J/mol K.

Problem solution:

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