Which of the following have a neutral charge

Which best describes how johannes kepler developed his laws of planetary motion

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?

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.