What volume of concentrated H2SO4 (18.0 M) is required to prepare 550 mL of 4.00 M H2SO4 solution?

What are transitions between a liquid and gas called? identify which way they are transitioning

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?

What effect might melting sea ice have for people who live in coastal areas?