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fgiga [73]
3 years ago
8

How to get the density of this unknown liquid?

Chemistry
1 answer:
scoray [572]3 years ago
3 0

Answer:

Measure the volume of water poured into a graduated cylinder, then place the object in the water and remeasure the volume. The difference between the two volume measurements is the volume of the object. Now simply divide the mass by the volume to calculate the density of the object.

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How many grarns would 3 moles of carbon dioxide (CO2) weigh? (round to the
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Mass of CO₂ = 132 g

<h3>Further explanation   </h3>

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

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mole also can be formulated :

\tt n=\dfrac{mass}{MW}

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mass of CO₂(MW=44.01 g/mol) :

\tt mass=mol\times MW\\\\mass=3\times 44.01\\\\mass=132.03~g\approx 132~g

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