Answer Happy

II. Percentage by weight
Instructions: Solve the following problems and apply the rules when
solving.
1. What is the percentage by weight of sugar solution prepared by
dissolving 80.0 grams sugar in 120 grams of water?
2. How many grams of glucose (C6H12O6) are needed to prepare 800
grams of a 5% glucose solution?
3. Calculate the percentage by mass of a solution if 50.0 g
solution contains 10.0g of dissolved salt.
4. A 20.0 grams of salt are dissolved in 65.0 grams of water.
Calculate the %mass.
Percentage by volume
Instructions: Solve the following problems and apply the rules when
solving.
1. An antifreeze is a substance added to a liquid to lower its
freezing point. If 4.00 L of antifreeze is added to enough water to
make 12.0 L of solution, what is the percentage by volume of the
solution?
2. What is the percentage by volume of a solution containing 20.0
mL alcohol and 140 mL water?
3. If 40.0 mL of ethyl alcohol is added to enough water to make
100mL of solution, what is the percentage by volume?
4. What is the percentage volume of a solution containing 20.0 mL
alcohol and 140 mL water?
Percentage by Weight-Volume
Instructions: Solve the following problems and apply the rules when
solving.
1. Calculate the percentage concentration if 30 grams of potassium
hydroxide are contained in a 45 mL solution.
2. Suppose you are a nurse who needs to calculate the mass of
dextrose, C6H12O6 present in a 1000 mL intravenous feeding of D5W,
which is a solution of 5.0% w/v dextrose in water.
3. How many grams of sugar are needed to prepare 500 mL of 10%
sugar solution?
III. A. Find the following volumes of gas from the indicated
pressure to standard pressure (760 mm Hg) (show your
computations)
1. 200mL at 710 torr
2. 320 mL at 1.50 atm
3. 36.0 L at 0.650 atm
4. 952 mL at 561 torr
5. 930 mL at 697 torr
B. What will be the volume of the following gases if their
respective temperatures are changed to standard temperature (273K)
at constant pressure? (show your computations)
1. 4.40 mL at 700C
2. 7.16 L at 280 K
3. 819 L at 514 K
4. 5.80 L at 514 K
5. 5.94 L at 790C
IV.
A. Complete the following nuclear reactions:
1. 𝐵𝑒49 + 𝐻𝑒24 → 𝑛01 + ______
2. 𝐶𝑜2759 + ______ → 𝑀𝑛2556 + 𝐻𝑒24
3. 𝑁714 + 𝑛01 → 𝐶614 + ______
4. 𝑁𝑎1123 + 𝐻12 → ______ + 𝐻11
5. 𝐵511 + ______ → 𝐶613 + 𝐻11
6. 𝑈92238 + 𝑛01 → ______ + 𝑒−10
7. 𝑃𝑢94239 + 𝑛01 → ______ 𝑃𝑢95240+ 𝑒−10
8. 𝑈92238 + 𝐶612 → ______ + 4 𝑛01
9. 𝐿𝑖37 + 𝐻11 → ______ 𝐻𝑒24 + _____
10. 𝐿𝑖37 + 𝐻11 → 𝐻𝑒24 + _____