Find the number of cations present in 7g of sodium prosphate Na=23 g/mol O=16g/mol P=31g/mol​

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Why doesn't heat added to water make the tempature rise above 100c

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.