Aaliya knows that sliced apples turn brown when left out in the open air. she also knows that pouring certain liquids on then will keep this from happening. aaliya thinks that water, ginger ale, or lemon juice may do the trick. how could aaliya set up an experiment to find out which one will work. what are the variables? what will she use as a control?

What overall charge must all compounds have

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg