Name: ____________________________________
Date: _______________ Period: ______
Density Problems - Calculations with Grids Std4e
Assignment
1 - Directions: Use Table C-6 on p. 916 of your textbook to find densities
for the elements listed. Then rewrite
the DENSITY in the next column as shown in the examples. Last, solve the problems give in the far
right column on the back of this paper.
Number from 1-10 on the back of this paper, or a separate sheet of
paper, and show the grids for your
calculations and circle your answers.
Units of measure are essential.
See examples at the beginning of chart of this page.
|
Elements |
Density |
|
_____ g |
= |
_____ cm3 |
Number from 1-10 on the back of this paper. Show your calculations (with grids) by each number. |
|||
|
|
|
|
|
|
|
|
|
||
|
Ex -
a. sulfur |
2.08 g/cm3 |
|
2.08 g S |
= |
1 cm3 S |
If you are given 13 cm3 of S, how much would it
weigh in grams? |
|||
|
Ex -
b. calcium |
8.65 g/cm3 |
|
8.65 g Ca |
= |
1 cm3 Ca |
If you are given 41.7 g of Ca, how many cm3 of Ca would you have? |
|||
|
1. cobalt |
|
|
|
|
|
|
If you are given 24 cm3 of Co, how much would
it weigh in grams? |
||
|
2. boron |
|
|
|
|
|
|
If you are given 105 g of B, how many cm3 of B
would you have? |
||
|
3. gallium |
|
|
|
|
|
|
If you are given 11 cm3 of Ga, how much would
it weigh in grams? |
||
|
4. iron |
|
|
|
|
|
|
If you are given 82.2 g of Fe, how many cm3 of
Fe would you have? |
||
|
5. mercury |
|
|
|
|
|
If you are given 13 cm3 of Hg, how much would
it weigh in grams? |
|||
|
6. oxygen |
|
|
|
|
|
|
If you are given 91.9 g of O, how many cm3 of O
would you have? |
||
|
7. zinc |
|
|
|
|
|
|
If you are given 2.91 cm3 of Zn, how much would
it weigh in grams? |
||
|
8. silver |
|
|
|
|
|
|
If you are given 77.3 g of Ag, how many cm3 of
Ag would you have? |
||
|
9. tin |
|
|
|
|
|
|
If you are given 2.77 g of Sn, how many cm3 of
Sn would you have? |
||
|
10. tungsten |
|
|
|
|
|
If you are given 152 g of W, how many cm3 of W
would you have? |
|||
Name: ____________________________________
Date: _______________ Period: ______
Solutions to
example problems in Assignment 1:
Ex – a (using grids, shown here as fractions)
13 cm3 of S 2.08 g of S
------------------- x ------------------- = 27 g of S
1 1 cm3 of S
Ex – b (using grids, shown here as fractions)
41.7 g of Ca 1 cm3 of Ca
-------------------- x ------------------ = 4.82 cm3 of Ca
1 8.65 g of Ca
Assignment 2 - Directions: Solve each
of these problems as you did in Assignment 1 above. Use the densities from Assignment 1. Show your work. If
you do not use grids, you will not get any points for this assignment
11. cobalt If you are given 214 g of Co, how many cm3 of Co would you have?
12. boron If you are
given 42.7 cm3 of B, how much would it weigh in grams?
13. gallium If you are given 64.9 g of B, how many cm3 of B would you have?
14. iron If you are
given 10.4 cm3 of Fe, how much would it weigh in grams?
15. mercury If you are given 175.9 g of Hg, how many cm3 of B would you have?
16. oxygen If you are
given 64,310 cm3 of O, how much would it weigh in grams?
17. zinc If you are given 20.78 g of Zn, how many cm3 of Zn would you have?
18. silver If you are
given 7.369 cm3 of Ag, how much would it weigh in grams?
19. tin If you
are given 0.3813 cm3 of Sn, how much would it weigh in grams?
20. tungsten If you are given 7.917 cm3 of W, how much would it weigh in grams?