Pb(CH3COO)2 + H2S --> PbS + CH3COOH

1. How many moles are produced of PbS when 5.00 grams of Pb(CH3COO)2 is reacted with H2S? Make sure to show your work to get full credit.

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

All forces cause motion? true or false

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.