What were the defects in Rutherford’s atomic model and how were these removed by Bohr?

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

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?

How are isotopes of the same chemical element alike? how are they different?