Question

Question: The M, of sodium hydroxide is 40. How many grams
of sodium hydroxide are there in:
a) 500 cm3 of a molar solution?
b) 25 cm of a 0.5 M solution?

Answer 1

Answer:

The negative flux just equals in magnitude the positive flux, so that the net, or total, electric flux is zero. If a net charge is contained inside a closed surface, the total flux through the surface is proportional to the enclosed charge, positive if it is positive, negative if it is negative.

Answer 2

The molar mass of NaOH is 40 g/mol.

The number of moles of NaOH is equal to the ratio of its mass to molar mass.

The number of moles of NaOH = 40g/mol

40g =1mol

The molarity of NaOH solution is the ratio of number of moles of NaOH to total volume of solution in L.

M= 1L1mol =1M

Hope this'll help you.