40 grams of magnesium and forty grams of oxygen react in a chemical reaction. In a closed system, which of the following must result? A 40 grams of product is formed B 80 grams of product is formed C It can not be determined based on the information given. D 1600 grams of product is formed

What’s the percent by mass of carbon in c10h14n2

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume