Counting the number of moles on both the reactant and product sides of an equation is the first step in balancing the equation.

Which statement best describes the Law of Conservation of Mass?

Cisplatin is a chlorine-containing chemotherapy agent with the formula Pt(NH 3) 2Cl 2. What is the mass of one mole of cisplatin?

How is the reaction shown below best classified? 2NaCl(s) + F2(g) → 2NaF(s) + Cl2(g)

Consider the chemical equation shown below. How many moles of oxygen gas are needed to react with hydrogen to form one mole of water? 2H 2(g) + O 2(g) → 2H 2O(l)

How many moles of Au atoms are present in one ounce of pure gold? [1 oz = 28.4 g]

If the atomic mass of hydrogen is 1.01 amu, a mole of H 2 will weigh 1.01 g.

In an acid-base reaction, what is transferred from the acid to the base?

Aluminum metal and oxygen gas are produced when aluminum oxide is heated at high temperature. Which statement concerning this chemical change is true?

Choose the best classification of the reaction represented by the following equation: Pb(NO 3) 2( aq) + CaCl 2( aq) → PbCl 2( s) + Ca(NO 3) 2( aq)