The number of moles of sodium hydroxide in 0.05 grams can be calculated using the formula:
Number of moles = mass / molecular weight
The molecular weight of sodium hydroxide is 40 grams per mole, so the number of moles in 0.05 grams of sodium hydroxide is:
Number of moles = 0.05 grams / 40 grams/mol = 0.00125 moles
Thus, there are 0.00125 moles of sodium hydroxide in 0.05 grams of the substance. This is a very small amount, as one mole of any substance contains 6.022 x 10^23 atoms or molecules.