How many moles and how many grams of sodium chloride are present in 25

1.	How many moles and how many grams of sodium chloride are present in 250 cm3 of a 0.500 m nacl solution?
Answer» Answer: Explanation: Given Molarity = 0.500 M Volume of the solution = 250 cm³ = 0.250 L Molarity is defined as the number of moles of SOLUTE present in one Liter of the solution. Mathematically, Molarity = Number of moles of solute/ Volume of solution (L) PUTTING NUMERICAL values, ⇒0.5 = Number of moles of solute/0.250 ⇒Number of moles of solute = 0.5 x 0.250 = 0. 125 moles Thus, number of moles of sodium CHLORIDE = 0.125 moles Mass of sodium chloride = Number of moles x molar mass = 0.125 x 58.5 G = 7.1325 g

How many moles and how many grams of sodium chloride are present in 250 cm3 of a 0.500 m nacl solution?

Answer»

Answer:

Explanation:

Given Molarity = 0.500 M

Volume of the solution = 250 cm³ = 0.250 L

Molarity is defined as the number of moles of SOLUTE present in one Liter of the solution. Mathematically,

Molarity = Number of moles of solute/ Volume of solution (L)

⇒0.5 = Number of moles of solute/0.250

⇒Number of moles of solute = 0.5 x 0.250 = 0. 125 moles

Thus, number of moles of sodium CHLORIDE = 0.125 moles

Mass of sodium chloride = Number of moles x molar mass

= 0.125 x 58.5 G

= 7.1325 g