You need 1.50 moles of ammonia (nh3) for a reaction at stp. what volume of ammonia must you measure? also, how many molecules of nacl are in 23.40 grams nacl?

what volume of ammonia must you measure? 

1.50 moles NH3 ( 22.4 L / 1 mole ) = 33.6 L NH3 should be measured

how many molecules of nacl are in 23.40 grams nacl

23.40 g NaCl ( 1 mol / 58.44 g) (6.022 x 10^23 molecules / 1 mol ) = 2.4113 x 10^23 molecules

Hope these answer the questions. Have a nice day.

1.from liquid state to gaseous state is evaporation 3.solid to liquid is melting 5. solid to gaseous state is sublimation 6. gas to solid state is decomposition 7. a change of state is known as the states of matters