name and explain the 3 factors that darwin is defined as those factors that affect the process of natural selection? Plz answerrr this is sciene

What is the number of moles in 15.0 g ash3?

If you add 10ml of hot water to 10ml of cold water and the change in tempature 8°c calculate how much energy is gained by the cold water

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water