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3 years ago

What is the density of an object with a mass of 1.663 g and a volume of 0.2009 mL

Chemistry

2 answers:

bearhunter [10]3 years ago

8 0

1.663g (Mass) ÷ 0.2009mL (Volume) = 8.27775012g/mL
(or 8.2778 if you round to the fourth decimal place)

daser333 [38]3 years ago

7 0

<span>8.278 g/mL The definition of density is mass per volume. So what you need to do is divide the known mass by the known volume. So 1.663 g / 0.2009 mL = 8.27775 g/mL But you also have to keep track of significant figures. Since both 1.663 and 0.2009 have 4 significant figures each, you need to round the result to 4 significant figures. So 8.27775 g/mL = 8.278 g/mL</span>

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<h3>Further explanation </h3>

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The average atomic mass :

$\tt avg~mass=0.8734\times 47.011+0.06895\times 48.008+0.0577\times 50.009\\\\avg~mass=41.059+3.310+2.886\\\\avg~mass=47.255~amu$

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