What is the mass of a sample of potassium sulphate that contains 5.000 x 10^23 atoms of potassium?

Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

How many moles are equivalent to 55.5g of nano3

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?