To find the amount of substance in moles from a given volume and molarity, you multiply the volume in liters by the molarity. For a 20mL solution with a molarity of 1.0M, there are 0.020 moles of the solute.
The question "what is 20mL times 1.0 M" appears to relate to a calculation of the amount of substance (likely in moles) when given a volume and molarity of a solution in chemistry. The proper interpretation of this question should involve the use of the formula moles = volume × molarity. Assuming 20 mL is the volume of a solution with a molarity (M) of 1.0 M, then you would calculate the number of moles of solute as follows:
Number of moles = 20 mL × 1.0 M (since 1L = 1000 mL, the volume in liters would be 0.020 L)
Number of moles = 0.020 L × 1.0 mol/L
Number of moles = 0.020 moles.
Therefore, 20 mL of a 1.0 M solution contains 0.020 moles of the solute.