Question

If a sample of a substance contains 9.03 x 1023 representative particles, how many moles does this represent?


0.5 mole

1 mole

1.5 mole

9 mole

Answer 1

Use a conversion factor to convert from number of particles to moles:\[9.03 \times {10^{23}}\ particles*(\frac{1mol}{6.022 \times {10^{23}}\ particles})=1.5mol\]