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  1. Print the notecards
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  1. Verify Front of pages is selected for Viewing and print the front of the notecards
  2. Select Back of pages for Viewing and print the back of the notecards
    NOTE: Since the back of the pages are printed in reverse order (last page is printed first), keep the pages in the same order as they were after Step 1. Also, be sure to feed the pages in the same direction as you did in Step 1.
  3. Cut out the notecards by cutting along each horizontal and vertical dotted line
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17 notecards = 5 pages (4 cards per page)

Viewing:

lab 4

front 1

If reaction gave a yield of 110% you might:

back 1

suspect the purity or identity of your product

front 2

Which of the following is not a goal of this experiment?

back 2

to purify chalk

front 3

Percent Yield, is a measure of:

back 3

the efficiency of a reaction

front 4

10mL of 1.5M CaCl2, contains how many moles of chloride ions?

back 4

0.030

front 5

It is critical to dispense the exact quantities of the reagents specified?

back 5

False

front 6

The smallest division on a buret is:

back 6

0.1

front 7

A limiting reagent is:

back 7

the reagent that is consumed first

front 8

The anticipated 'Percent Yield' in this experiment is:

back 8

>80%

front 9

Consider the reaction:
N2(g) + 3H2(g) = 2NH3(g)

if 4 moles of nitrogen gas is reacted with 3 moles of hydrogen then:

back 9

this reaction would produce 2 moles of NH3(g)

front 10

Aqueous solutions of sodium carbonate and calcium chloride when mixed produce calcium carbonate solid and sodium chloride. When this reaction is balanced the stoichiometric coefficient in front of sodium chloride is

back 10

2

front 11

What is the ~ molarity of the CaCl2 solution?

back 11

0.5

front 12

What is the suggested beaker size for your water bath?

back 12

400mL

front 13

What degree of precision is required between the weighing when drying the CaCl2?

back 13

within 0.02g of each other

front 14

Consider the reaction:
N2(g) + 3H2(g)= 2NH3(g)
If upon reacting 2 moles of N2(g) with 3 moles of H2(g) you produced 1 mole of NH3(g). The percent yield would be:

back 14

50%

front 15

The fire extinguisher is located:

back 15

in the middle of the lab and in the hallway

front 16

When using a buret all volumes should be recorded to:

back 16

2 decimals

front 17

The formula for sodium carbonate is:

back 17

Na2CO3