62.65 g of NaNO3 is dissolved in water to make a 0.400 M solution. What is the volume of the solution in liters?

Amount of liquid measured in l or lm

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Ineed ! i have no clue how to do this problem.