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3 years ago

A substance has a volume of 20 mL and a density of 2.5 g/mL. What is its mass?

Chemistry

2 answers:

k0ka [10]3 years ago

5 0

Answer:

Explanation:

Density of a substance can be found by using the formula

$Density(\rho) = \frac{mass}{volume}$

From the question

Density = 2.5 g/mL

volume = 20 mL

To find the mass substitute the values into the above formula and solve for the mass

That's

Making mass the subject we have

mass = Density × volume

mass = 2.5 × 20

We have the final answer as

Hope this helps you

AURORKA [14]3 years ago

5 0

Answer:

mass=?,volume=20,density=2.5.

density=mass/volume.

which will be 2.5=mass/20

which is mass=2.5×20=50kg

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There is a 30g of be-11 it has a half-life of about 14 seconds how much will be left in 28 seconds

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