A change in the direction of a wave resulting from its meeting an opaque material is called ______________.
Fill in the blank(s) with correct word
Question 2
When 1.0 gram of hydrogen combines with 8.0 grams of oxygen, 9.0 grams of water is formed. But is this true? During the reaction 2.86 105 J of energy is released. How much mass is actually lost in this reaction?