if we have 16ml of water its mass would be

first recall the density of water,, density is mass per unit volume,,

the density of water is approximately 1 g/mL , therefore:
d = m/V
where m = mass in g, and V = volume in mL

1 = m/16
m = 16 grams

so there,, :)

To determine the mass of water, you need to know its density. The density of water is approximately 1 gram per milliliter (g/mL) at standard conditions (room temperature and atmospheric pressure).

Therefore, if you have 16 milliliters (mL) of water, you can calculate its mass by multiplying the volume (16 mL) by the density (1 g/mL):

Mass of water = Volume × Density
Mass of water = 16 mL × 1 g/mL
Mass of water = 16 grams

So, if you have 16 mL of water, its mass would be 16 grams.