# data[].attributes.body
As discussed in previous lesson.
Recap:

# data[].attributes.attachment_link.title
GCSE Science Chemistry (9-1) Reacting masses 1

# data[].attributes.attachment_link.title
Calculate Mass of Product Formed (Example)

# data[].attributes.attachment_link.title
Calculating masses in reactions | Chemistry for All | The Fuse School

# data[].attributes.attachment_link.description
Learn the basics about Calculating masses in reactions. What happens to the density of the mass when we include reactions? What reactions changes the mass? How do you measure it? Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ).

# data[].attributes.body
Use to calculate Molar Masses

# data[].attributes.body
1. Calculate the number of moles of NaOH that are needed to react with 500g of H2SO4 according to the following equation:
H2SO4 + 2NaOH → Na2SO4+ 2H2O
ANS: 10.19 mol

2. Calculate the mass of NH3 that can be produced from the reaction of 125 g of NCl3 according to the following equation:
NCl3  +  3H2O   →  NH3+3HOCl
ANS: 17.7 g

3. Determine the mass of CO2 that can be produced from the reaction of C3H8 with 75 g of O2 according to the following equation:
C3H8 + 5 O2  → 3 CO2 + 4 H2O

4. How many grams of SO2 are produced when 152 g of CS2 react with 48 g of O2 according to the following equation:
CS2 + 3O2 →  CO2+ 2SO2

# data[].attributes.body
5. Methane can react with elemental chlorine to make carbon tetrachloride (CCl4). The balanced chemical equation is as follows:

CH4 + 4Cl2 → CCl4 + 4HCl

How many grams of HCl are produced by the reaction of 100 g of CH4?