Experimental Procedure, Part A.1. Calculate the mass of disodium (molar mass = 372.24 g/mol) required to prepare 250 mL of a 0.010 M solution. Show the calculation here and on the Report Sheet. Express the mass to the correct number of significant figures.

0.93 g of disodium ethylenediaminetetraacetate is required.

Explanation:

Molarity of a solution = (Number of moles of solute in solution)/(Volume of solution in liter)

Here, disodium ethylenediaminetetraacetate is the solute.

Volume of solution = 0.250 L

Molarity of solution to be prepared = 0.010 M

So, number of moles of disodium ethylenediaminetetraacetate required = moles = 0.0025 moles

We know, number of moles = (mass)/(molar mass)

So, mass of disodium ethylenediaminetetraacetate required = = 0.93 g

Hence, 0.93 g of disodium ethylenediaminetetraacetate is required.

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