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AnnyKZ [126]
3 years ago
15

Calculate the mass in mg of the aspirin tablet that contains 5.0 grains of aspirin . Assume 1 pound contains 7000 grains.

Chemistry
1 answer:
Rzqust [24]3 years ago
4 0

Answer:

323.99 mg

Explanation:

We need to find the mass of the aspirin tablet that contains 5.0 grains of aspirin.

1 pound = 7000 grains

1\ \text{grain}=\dfrac{1}{7000}\ \text{pounds}

5\ \text{grain}=\dfrac{1}{7000}\times 5\ \text{pounds}\\\\=\dfrac{1}{1400}\ \text{pounds}

We know that, 1 pound = 453.592 grams

Also, 1 pound = 453592 mg

\dfrac{1}{1400}\ \text{pounds}=\dfrac{1}{1400}\times 453592\ mg\\\\=323.99\ \text{mg}

Hence, 4 grains of aspirin contains 323.99 mg.

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777dan777 [17]

  n = 1.5atm (15L) / .0821 (280k) = .98 mol NaCl

  NaCl = 22.99g Na + 35.45g Cl = 58.44g NaCl

  58.44g NaCl x .98 mol NaCl = 57.27g NaCl

Explanation:

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4 0
2 years ago
An 8 oz. bottle of energy drink contains 6.0 g of protein, 2.0 g of fat, and 16.3 g of carbohydrate. The fuel value of this ener
valina [46]

<u>Answer:</u> The correct option is d) 460 kJ

<u>Explanation:</u>

We are given:

Content of fat in energy drink = 2.0 g

Content of protein in energy drink = 6.0 g

Content of carbohydrate in energy drink = 16.3 g

Also,

The fuel value of fat = 38 kJ/g

The fuel value of protein = 17 kJ/g

The fuel value of carbohydrate = 17 kJ/g

So, the fuel value of the energy drink will be:

Total fuel value = (2.0g\times 38 kJ/g)+(6.0g\times 17 kJ/g)+(16.3g\times 17 kJ/g)

Total fuel value = [76+102+277]=460kJ

Hence, the correct option is d) 460 kJ

4 0
3 years ago
Which statement is true about the force of gravity? A. The earth has a greater gravitational effect than the sun. B. The moon ha
Georgia [21]
Answer is: <span>D. The sun has a greater gravitational effect than the earth. 
</span>Gravity as a force which causes any two bodies to be attracted to each other. The gravitational effect<span> increases as the size of an object increases. </span><span>Earth s surrounded by its own gravitational field.</span>

3 0
3 years ago
The chief advantage of the metric system over other system of measurement is that it
kolbaska11 [484]

Answer:

The metric system goes by powers of ten, so it's very easy to measure. That would be the main advantage, measurements of ten. We can also say it's the most used measurement around the world, so all scientists have little to no conversion, but the main answer is probably the first one :)

6 0
3 years ago
How many grams of ammonia gas can be formed from 54.1 g of hydrogen gas
Murrr4er [49]

Answer:

304.19 g

Explanation:

M(H2) = 2*1 = 2 g/mol

54.1 g H2 * 1 mol H2/2gH2 = 27.05 mol H2        

                                   3H2 + N2 ------> 2NH3

from reaction             3 mol                  2 mol

given                   27.05 mol                 x mol

x = 27.05*2/3 = 18.03 mol NH3

M(NH3) = 14 +3*1 = 17 g/mol

18.03 mol NH3 * 17 g NH3/ 1 mol NH3 ≈ 307 g

Closeet answer is 304.19 g.

4 0
3 years ago
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