Exercise N5 1_8A Equations & Calculations

 

1. 5.
Picture46  Picture19
2. 6.
 Which model represents carbon hydride  moles of sodium carbonate grams
3. 7.
 The formula mass for ammonium sulfate is  electrons particles number of
4. 8.
 Picture1  The formula for potassium sulfate is

For each of the questions 9-11.   Show your working clearly.

 

  9. Find the formula mass of the following:
a. sodium chloride
b. ethane
c. calcium chloride
d. nitrogen dioxide
e. lead (II) bromide

 

10. Calculate the mass of the following:
a. 2 moles of CH4
b. 10 moles of CO2
c. 0.25 moles of calcium phosphate
d. mole sof copper (II) oxide
e. 3 moles of ammonium phosphate

 

11. Calculate the number of moles in:
a.     20g of calcium
b. 100g of NaOH
c. 128g of sulfur dioxide
d. 25g of lithium chloride
e. 05g of iron (III) oxide

 

12.
Picture11
 Picture12

 

A marking guide for this Homework is available (password required).

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