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How would you work out the mols of a substance?

Mols is a measure of the amount of a molecule present, chemically defined as 1/12th of an atom of carbon 12

Mols = Mass (g) / Molecular Mass (gmol^-1)

Answered by Bilal U. • Chemistry tutor

2086 Views

Calculate the atom economy of the following equation, assuming that KNO3 is the desired product. KOH + HNO3 ---> KNO3 + H2O (Mr of reactants and products, KOH - 56.1, HNO3 - 63.0, KNO3 - 101.1, H2O - 18.0)

Answer: 84.9% The equation for calculating the atom economy is = (Mr of desired product / total Mr of products) x 100 or = (Mr of desired product / total Mr of reactants) x 100 as the total Mr of the prod...

Answered by Manon S. • Chemistry tutor

4185 Views

Explain why the reactivity of the elements in group 1 increases as we go down the periodic table?

The reactivity of group 1 metals increases as we go down the periodic table because as we go down the group the electrons are further away from the nulceus as the number of shells increase and therefore t...

Answered by SUNIYA K. • Chemistry tutor

18011 Views

How does the pKa level correlate with acid strength?

The pKa is a way of measuring the strength of an acid in water solution. An acid, in this context, is a molecule that releases a proton (H+) when in water. The more readily this molecule releases a proton...

Answered by Riccardo S. • Chemistry tutor

8588 Views

How do i determine which compound is more ionic?

Ionic bonds are an electrostatic attraction between oppositly charged ions. Ionic bonds are formed between a non-metal (positively charged cation) (group I,II, III on periodic table) and a metal (negative...

Answered by Shirleen B. • Chemistry tutor

37385 Views