Question

5 mL of water convert to how many grams exactly?

Answer 1

Volume to mass, for that we need the density of water

Answer 2

At room temperature (20°C) water has a density of 998.2071 kg/m3 which converted to grams/ml is 0.9982071 g/ml

You have 5mL so just multiply 5 with the density
5x0.9982071 = 4.9910355 grams

Answer 3

Thank you!