Question

How many litres of liquid $CC{l}_4$ (d = 1.5g/cc.) must be measured out to contain $1\times {10}^{25}CC{l}_4$ molecules?

• A. 2.35 L
• B. 1.89 L
• C. 1.7 L
• D. None of these

Answer 1

The correct option is C 1.7 L

$1c{m}^3\to 1.5g$ of $CC{l}_4$

$\frac{12+(4\times 35.5)}{1.5}c{m}^3\to$ 1 mole of $CC{l}_4$

$\to 6.02\times {10}^{23}$ molecule $CC{l}_4$

${10}^{25}$ molecule $CC{l}_4\Rightarrow (\frac{12+4\left(135.5\right)}{1.5}\times \frac{{10}^{25}}{6.20\times {10}^{23}})$

$\Rightarrow 1.7lt$