Question

What volume does a sample of $1.50\times {10}^{23}$ atoms of helium at STP represent?

• A. 5.6 L
• B. 11.2 L
• C. 17.8 L
• D. 22.4 L
• E. None of the above

Answer 1

The correct option is A 5.6 L

Moles at $STP$$=$$(1.5\times {10}^{23})/(6\times {10}^{23})$$=$$.25mole$

Total volume of helium at $STP$$=$$22.4\times 0.25$$=$$5.6L$