The chemical equation shows the production of magnesium chloride. Mg + 2HCl → MgCl2 + H2
How many grams of H2 will be produced from 12 grams of Mg?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

How many atoms are there in 5.70 mol of mg

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.