Question 2

given the reaction, pcl3 + cl2 imported asset pcl5, if 3.00 moles of cl2 are used, then how many moles of pcl5 are made?

6.00 moles

5.00 moles

3.00 moles

1.00 mole
3 points save answer
question 3

given the balanced equation, fe2o3 + 3 co imported asset 2 fe + 3 co2, what is the molar ratio of co to co2?

3: 3

3: 1

3: 2

1: 3
3 points save answer
question 4

using the equation, 4fe + 3o2 imported asset 2fe2o3, if 96.0 g of oxygen react, what mass of iron was oxidized?

32.0 g

96.0 g

167 g

223 g
3 points save answer
question 5

using the equation, c5h12 + 8o2 imported asset 5co2 + 6h2o, if 10 moles of carbon dioxide are produced, how many moles of pentane (c5h12) would need to be supplied?

2 moles

0.5 mole

5 moles

10 moles
3 points

Explanation:

1) Answer 2:  

According to reaction, 1 mol of chlorine gas gives 1 mol of

Then, 3.00 moles of chlorine gas will give :

3.00 moles of are made.

2) Answer 3:

Molar ratio is defined ratio of moles of two different substances.

Moles of carbon monoxide gas = 3 mol

Moles of carbon dioxide gas = 3 mol

Molar ratio of

Molar ratio of is 3:3.

3) Answer 4:

Moles of oxygen gas =

According to reaction 3 moles of oxygen gas reacts with 4 mol of iron metal.

Then mass of 4 mol of iron metal :4 mol × 55.85 g/mol =223.4 g≈223 g

223 grams of iron was oxidized.

4) Answer 5;

According to reaction , 5 moles of carbon dioxide are produced by 1 mol of pentane.

Then 10 moles of carbon dioxide will be produced by:

of pentane.

2 moles of pentane would need to be supplied.

58750.08068 is the answer i think

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i