Hydrogen gas and oxygen gas react together to make water by the following balanced reaction:
02 + 2H2
2H20
How many grams of combined oxygen and hydrogen
gas will react to produce 1.6g of water?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Which of the following are sources of revenue for media companies? a. direct sales to producers b. advertising and subscriptions c. online purchase d. capital investments