Hydrogen and oxygen gas react to form water by the reaction below. O2 + 2H2 + 2H2O
What volume of oxygen gas is required to completely react with 30.0
L of hydrogen gas, assuming all volumes are measured at the same
temperature and pressure conditions?
a 30.0L
b 10.0L
C 15.0 L
d 60.0L

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds