22 Which method of separation is used to obtain pure salt from a mixture of salt, sand and water?
A boiling then filtering
B evaporating then condensing
C filtering then evaporating
D filtering then sieving

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.

How to convert a density of 0.791g/cm3 to lb/ft3

How are isotopes of the same chemical element alike? how are they different?