Question #261196
how many moles of water are in a snowflakes weighing 5.0x10^-5g? How many of these snowflakes would it take to have 1.0kg of ice?
Expert's answer
Solution:
The molar mass of water (H2O) is 18.015 g/mol
Hence,
(5.0×10-5 g H2O) × (1 mol H2O / 18.015 g H2O) = 2.775×10-6 mol H2O = 2.8×10-6 mol H2O
Convert kg to g:
(1.0 kg) × (1000 g / 1 kg) = 1000 g
Number of snowflakes = (1000 g) / (5.0×10-5 g) = 2.0×107 snowflakes
Answer:
2.8×10-6 moles of water
2.0×107 snowflakes
