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3 years ago

A gas has a volume of 7.0 L and a mass of 8.50 X 109 grams. What is its density in g/ml?

Chemistry

1 answer:

natka813 [3]3 years ago

8 0

Answer:

The answer is

Explanation:

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

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

From the question

mass of gas = 8.5 × 10^9 g

But 1 L = 1000 mL

So 7 L = 7000 mL

volume = 7000 mL

So the density of the gas is

$density = \frac{8.5 \times {10}^{9} }{7000} \\ = 1214285.714285...$

We have the final answer as

1, 214, 285.71 g/mL

Hope this helps you

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Question in incomplete, complete question is:

Technetium (Tc; Z = 43) is a synthetic element used as a radioactive tracer in medical studies. A Tc atom emits a beta particle (electron) with a kinetic energy (Ek) of $4.71\times 10^{-15}J$ . What is the de Broglie wavelength of this electron (Ek = ½mv²)?

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