Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. if 100grams of hydrochloric acid reacts with 100 grams of calcium, how much of the excess reagent will be left over after the reaction is complete?

What is the overall order of reaction for rate = k[no]2[o2]

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?