It snowed, it melted and now the temperature is going to dip below freezing, to -2.00 °C overnight. You notice a puddle

[answerhappygod]

It snowed, it melted and now the temperature is going to dip
below freezing, to -2.00 °C overnight. You notice a puddle of water
in the driveway of your house. You don’t want to start your morning
by slipping on the ice, so you decide to put some salt down before
the temperature dips. You guess the puddle contains about 10 L of
water. How much salt (NaCl) would you have to throw into the water
to prevent it from freezing? Molar mass of NaCl is 58.44
g/mol.