Jamal performs an experiment where he mixes hydrochloric acid and zinc metal together. He writes a chemical equation that he thinks models his experiment:
Which evidence statement from the model suggests that a chemical reaction
took place?"

Apackage contains 1.33 lb of ground round. if there’s 29% fat, how many grams of fat are in the round? i got 175 g but the textbook says the answer is 91 g of fat. how?

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?