You wish to prepare 100.0 ml of a 525.0 ppm w/v fluoride (mw = 18.9984 g/mol) solution. how many grams of beryllium fluoride ( bef 2 , mw = 47.01 g/mol) are needed to prepare this solution? assume the final solution has a density of 1.00 g/ml.

Drug abuse will not lead to physical and psychological dependence. true or false ?

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.