A photon has a frequency of 2. 9 × 10–16 Hz. Planck’s constant is 6. 63 × 10–34 J•s. The energy of the photon, to the nearest tenths place, is × 10–49 J.

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

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?