What mass of solute is required to produce 537.6 mL of a 0.243 M solution of KBr?

What happens to the atomic radius when an elctron is lost

Can someone me with 1 to 4 plz. fast

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?