1. if the recommended adult dose of penicillin is 0.01 g/kg, How many 150 tablet

Question

1. if the recommended adult dose of penicillin is 0.01 g/kg, How many 150 tablets would a 32 Ib child have to take to receive the same dosage

2. Which measurement represents the largest quantity

a) 47.3mg

b.4730ng

C. 4.73x 10–6kg

D. 4.73 X10–4g

3) If a gasoline cost 95.4 cents per liter, what is its cost on paper on a per gallon basis? ( 1L=1.06 quarts; 1 gallon = 4 quarts

4.) An extra -strength Asprin contains 0.500g of Asprin. How Much grain is this (1grain = 64.8mg)

5.) the number of protons in the nucleus of an atom is called?

6.) The atomic size of atom changes in which directions.

7.) what does adding one proton to the nucleus of an atom do.

Explanation / Answer

1. recommended adult dose of pencillin = 0.01 g/ kg

1 lb = 0.45 kg

32 lb = 0.45 * 32 kg = 14.4 kg

so, recommended dosage of 14.4 kg = (14.4 * 0.01) = 0.144 g

How many 150 table 32(14.4 kg) Ib child have to take to receive the same dosage

= (0.114 / 150) g

= 0.00096

= 0.96 mg

2. a) 47.3 mg = 47.3 x 10-3 g = 0.0473 g

b) 4730 ng = 4730 x 10-9 g = 0.04730 x 10-4 g

c) 4.73 x 10-6 kg = 4.73 x 10-3 g = 0.00473 g

d) 4.73 x 10-4 = 0.000473 g

largest among these is 0.0473 g, so ans is (a)

3. gasoline cost = 95.4 cents per liter

1 quarts = 0.95 L

s0, 4 quarts = 1 gallon

4 quarts = 4 * 0.95 L

= 3.8 L

there fore 1 gallon = 3.8 L

cost of 1 gallon of gasoline = 3.8 * 95.4 cents

= 362.52 cents

4. extra-strength aspirin = 0.500 g of aspirin

1 grain = 64.8 mg = 0.0648 g

extra strength of aspirin =( 0.500 / 0.0648) grains of aspirin

= 7.72 grains

5. Atomic Number

6. atomic size increases down the group of periodic table

7. the element will be come radioactive

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