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Vladimir [108]
3 years ago
6

What is the density of a substance that weighs 340g and has a volume of 40cm3?

Chemistry
1 answer:
jeka943 years ago
5 0

Answer:

<h2>8.5 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{340}{40}  =  \frac{17}{2}  \\

We have the final answer as

<h3>8.5 g/cm³</h3>

Hope this helps you

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Answer:

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Explanation:

From the question we are told that:

Pressure P=747mmHg

Temperature T=298K

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Generally the equation for ideal gas is mathematically given by

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Therefore

 x+y=0.446

 x=0.446-y .....1

Since

Heat of combustion of Methane=889 kJ/mol

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Therefore

 x(889) + y(2220) = 760 ...... 2

Comparing Equation 1 and 2 and solving simultaneously

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