3rd Quarter: Stoichiometry Worksheet 1

 

 Stoi - kee- AHM- uh- tree Worksheet

1.        1. How many grams of calcium carbonate are required to prepare 50.0 g of calcium oxide? CaCO₃ ----->  CaO +  CO₂

2.        2. When 0.50 g of magnesium reacts with silver nitrate, how many grams of silver are prepared? Mg +  AgNO₃ ------> ______ + _______                                            

3.           3. If 75.0 g of copper react with mercuric nitrate, how many grams of mercury form? 

        Cu +  Hg(NO₃)₂ --->  Cu(NO₃)₂ +  Hg

4.          4. When 60.0 g of aluminum react with hydrochloric acid, how many grams of hydrochloric acid react?

5.            5. How many grams of magnesium chloride are produced by treating 4.00 g of titanium (III) chloride with magnesium?

 

Answers will be posted tomorrow (Nov 27, 2011)and more worksheets to come!

3rd Quarter: Mole Conversion 2018

Holey-Moley!

A good mole-y day to everyone. Good thing we're not dealing with this kind of mole. Look at those nails!

Moles, Molecules, and Grams Worksheet – (Answers in Red)

1)         How many molecules are there in 24 grams of FeF₃? 1.28 x 10²³ molecules

2)         How many molecules are there in 450 grams of Na₂SO₄?  1.91 x 10²⁴ molecules

3)         How many grams are there in 2.3 x 10²⁴ atoms of silver?  421 grams

4)         How many grams are there in 7.4 x 10²³ molecules of AgNO₃?  209 grams

5)         How many grams are there in 7.5 x 10²³ molecules of H₂SO₄?  122 grams

6)         How many molecules are there in 122 grams of Cu(NO­₃)₂?  3.92 x 10²³ molecules

7)         How many grams are there in 9.4 x 10²⁵ molecules of H₂?  312 grams

8)         How many molecules are there in 230 grams of CoCl₂?  1.07 x 10²⁴ molecules

9)         How many molecules are there in 2.3 grams of NH₄SO₂?  1.69 x 10²² molecules

10)      How many grams are there in 3.3 x 10²³ molecules of N₂I₆?  430 grams

11)      How many molecules are there in 200 grams of CCl₄?  7.82 x 10²³ molecules

12)      How many grams are there in 1 x 10²⁴ molecules of BCl₃?  195 grams

13)      How many grams are there in 4.5 x 10²² molecules of Ba(NO­₂)₂?  17.1 grams

14)      How many molecules are there in 9.34 grams of LiCl?  1.33 x 10²³ molecules

15)      How many grams do 4.3 x 10²¹ molecules of UF₆ weigh?  2.51 grams

16)      How many molecules are there in 230 grams of NH₄OH?  3.96 x 10²⁴ molecules

3rd Quarter: Molar Mass Worksheet 2018

Hello everyone! 

It's a great day to solve chemistry problems.... so here goes. Remember, chemistry loves you.

Molar Mass Worksheet

Calculate the molar masses of the following chemicals:

1)         Cl₂

2)         KOH

3)         BeCl₂

4)         FeCl₃

5)         BF₃

6)         CCl₂F₂

7)         Mg(OH)₂

8)         UF₆

9)         SO₂

10)       H₃PO₄

11)       (NH₄)₂SO₄

12)       CH₃COOH

13)       Pb(NO₃)₂

14)       Ga₂(SO₃)₃

Molar Mass Worksheet – Answer Key

Calculate the molar masses of the following chemicals:

1)         Cl₂  71 g/mol

2)         KOH  56.1 g/mol

3)         BeCl₂  80 g/mol

4)         FeCl₃  162.3 g/mol

5)         BF₃  67.8 g/mol

6)         CCl₂F₂  121 g/mol

7)         Mg(OH)₂  58.3 g/mol

8)         UF₆  352 g/mol

9)         SO₂  64.1 g/mol

10)       H₃PO₄  98 g/mol

11)       (NH₄)₂SO₄  132.1 g/mol

12)       CH₃COOH  60 g/mol

13)       Pb(NO₃)₂  331.2 g/mol

14)       Ga₂(SO₃)₃  379.7 g/mol

Have fun! :D