You mix 5.25 moles of a with 7 moles of b in the chemical equation 3a + 4b 2c + 3d. which statement is true about the reactants? b has a greater molar mass than
a. a has a greater molar mass than
b. b is the limiting reactant.
c. a is the limiting reactant.
d. a and b are in ideal stoichiometric proportion.

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.