Answer to Question #301450 in General Chemistry for Ivan Ackerman

Question

A beaker contains 45.5 mL of carbon tetrachloride (CCl4, density is 1.59 g/mL).

Determine how many molecules of carbon tetrachloride are in the beaker.

Answer 1

Mass $=45.5×1.59=$ $72.345g$

Molar mass of CCl$_4=153.82g/mol$

Avogadro's constant$=6.022×10^{23}$

Number of molecules$=\frac{72.345}{153.82}×6.022×10^{23}$

$=2.83×10^{23}$ Molecules