How many moles of hydrogen are produced from the reaction of 50.0 g of Mg and the equivalent of 75 g of HCl?

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at