Acetylene gas (C2H2) reacts with oxygen to produce carbon dioxide and water. When 30.0 g of acetylene is reacted with O2, 18.5 g of water is formed. 2 C2H2 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (l)
What is the percent yield of this reaction?

Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.

Which best describes why nh4+ can form an ionic bond with cl-?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.