Reference no: EM13772062
1. How many iron atoms present in 5.0 mol of iron metal?
2. Calculate the number of moles of sulfur represented by 1.81 X 10^24 atoms of sulfur?
3. How many grams are contained in 2.00 mol of Neon?
4. Calculate the number of moles of 20.0 g He
5. Calculate the number of atom in 15.0 g of Silver.
6. Silicon tetrachloride (SiCl4) can be prepared by heating Si in chlorine gas:
Si + 2Cl2 → SiCl4
In reaction. 0.507 mole of SiCl4 is produced. How many moles of molecular chlorine were used in the reaction?
7. 4KO2 + 2H2O → 4KOH + 3O2
If 0.25 mol KO2 added to 0.15 mol H2O. How many moles of oxygen can be produced?
What is limiting reactant?
8. Calculate the formula weight of CHCl3.
9. Magnesium metal burns in oxygen to form magnesium oxide, MgO
a. Write a balanced equation for the reaction.
b. How many grams of oxygen are needed to react with 25.0 g. of Mg?
10. Calculate percent of Hydrogen in ammonium nitrate NH4NO3.
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