If you had a 100-gram sample of Einsteinium, how much would you have left after 40 days?

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Calculate the number of molecules present in 0.750 mol of mgo.

Consider this initial-rate data at a certain temperature for the reaction described by