For the sample of 5.9 grams of calcium sulfate dehydrate, how many grams of anhydrous calcium sulfate would you expect to remain after the water is removed? ( refer to photo for further information)

How many grams of aluminum will there be in 98g of al2o3?

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

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?