For the reaction represented by the equation 2H2 + O2 + 2H20, how many grams of water are produced from 4.6 grams of hydrogen? (H=1g/mol, O=16g/mol)
Round your answer to one decimal.

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

What effect might melting sea ice have for people who live in coastal areas?

When balancing a chemical equation: