Calculate the pH of the buffer system made up of 0.15 M NH3/ 0.24 M NH4Cl.

Which of the following statements is true about planck’s law

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?

Light waves can move through , but they travel fastest when they move through a(n) .