Complete the expressions for the rate of appearance of products and the rate of disappearance of reactants in each of the following reactions: a) Cl2O2(g) → 2ClO(g)
b) N2O5(g) → NO2(g) + NO3(g)
NOTE: add only minus signs and fractions where appropriate.

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?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c