How many grams of NaOH will make 1M of its aqueous solution in 1000cm3

The mass of NaOH is 40 g

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

.....(1)

Given values:

Molarity of NaOH = 1 M

Molar mass of NaOH = 40 g/mol

Volume of the solution =            (Conversion factor: )

Putting values in equation 1, we get:

Hence, the mass of NaOH is 40 g

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

pv=nrt

explanation: