What is the molarity of a solution that has 23.0 g of NaOH dissolved in 0.500 L of solution?

1.15M

Explanation:

Given that,

Amount of moles of NaOH (n) = ?

Mass of NaOH in grams = 23.0g

For molar mass of NaOH, use the atomic masses: Na = 23g; O = 16g; H = 1g

NaOH = (23g + 16g + 1g)

= 40g/mol

Since, n = mass in grams / molar mass

n = 23.0g / 40.0g/mol

n = 0.575 mole

Volume of NaOH solution (v) = 0.5 L

Concentration of NaOH solution (c) = ?

Since concentration (c) is obtained by dividing the amount of solute dissolved by the volume of solvent, hence

c = n / v

c = 0.575 mole / 0.5L

c = 1.15 M (M stands for molarity and gives the concentration in moles per litres)

Thus, the molarity of the solution is 1.15M

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

thats a little if u want the answer just look it up on google thats what i do haha : )