Calculate the mass of sodium hydroxide needed to make a 5.00L with a molarity of 0.400M​

79.994g NaOH

Explanation:

The formula for molarity is M=moles of solute/Liters of solution, M=n/L

You are given L and M, so 0.4=n/5

n (moles of solute) = 2

2 moles of NaOH, multiplied by the molar mass of NaOH (39.997) to get the mass needed: 79.994g

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.