Chemistry, 28.08.2019 17:30 jfox8741

Determine the number of moles of the compound and determine the number of moles of each type of atom in each of the following. a. 25.0 g of propylene, c3h6b. 3.06 x 10^-3g of the amino acid glycine, c2h5no2c. 25 lb of the herbicide treflan, c13h16n2o4f (1lb = 454 g)d. 0.125 kg of the insecticide paris green, cu4(aso3)2(ch3co2)2e. 325 mg of aspirin, c6h4(co2h)(co2ch3)

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Answer from: amanuelwold

Explanation:

$n=\frac{\text{Mass of compound}}{\text{Molar mass of compound}}$

n = number of moles

a. Mass of propylene = 25 g

Molar mass of propylene =42 g/mol

Moles of polypropyne:

$\frac{25 g}{42 g/mol}=0.5952 mol$

In 1 mol there are 3 moles of carbon atoms, then in 0.5952 moles of propyene:

$3\times 0.5952 mol=1.7856 mol$ of carbon

In 1 mol there are 6 moles of hydrogen atoms, then in 0.5952 moles of propyene:

$6\times 0.5952 mol=3.5712 mol$ of hydrogen

b. Mass of amino acid = $3.06\times 10^{-3} g$

Molar mass of amino acid: 75 g/mol

Moles of amino acid:

$\frac{3.06\times 10^{-3} g}{75 g/mol}=0.0000408 mol$

In 1 mol there are 2 moles of carbon atoms, then in 0.0000408 moles of amino acid :

$2\times 0.0000408 mol=0.0000816 mol$ of carbon atom

In 1 mol there are 6 moles of hydrogen atoms, then in 0.0000408 moles of amino acid :

$5\times 0.0000408 mol=0.000204 mol$ of hydrogen atom

In 1 mol there are 2 moles of oxygen atoms, then in 0.0000408 moles of amino acid :

$2\times 0.0000408 mol=0.0000816 mol$ of oxygen atom

In 1 mol there are 1 moles of nitrogen atoms, then in 0.0000408 moles of amino acid :

$1\times 0.0000408 mol=0.0000408 mol$ of nitrogen

c. Mass of herbicide Treflan = 25 lb = 11350 g

1 lb = 454 g

Molar mass of herbicide Treflan = 283 g/mol

Moles of herbicide Treflan = $\frac{11350 g}{283 g/mol}=40.1060 mol$

In 1 mol there are 13 moles of carbon atoms, then in 40.1060 moles of amino acid :

$13\times 40.1060 mol=521.37 mol$ of carbon atom

In 1 mol there are 16 moles of hydrogen atoms, then in 40.1060 moles of amino acid :

$16\times 40.1060 mol=641.696 mol$ of hydrogen atom

In 1 mol there are 4 moles of oxygen atoms, then in 40.1060 moles of amino acid :

$4\times 40.1060 mol=160.424 mol$ of oxygen atom

In 1 mol there are 2 moles of nitrogen atoms, then in 40.1060 moles of amino acid :

$2\times 40.1060 mol=80.212 mol$ of nitrogen atom

In 1 mol there are 1 moles of fluorine atoms, then in 40.1060 moles of amino acid :

$1\times 40.1060 mol=40.1060 mol$ of fluorine

d. Mass of insecticide Paris Green = 0.125 kg = 125 g

1000 g = 1 kg

Molar mass of insecticide Paris Green = 1,013.79 g/mol

Moles of insecticide Paris Green:

$\frac{125 g}{1,013.79 g/mol}=0.1233 mol$

In 1 mol there are 4 moles of carbon atoms, then in 40.1060 moles of insecticide Paris Green :

$4\times 0.1233 mol=0.4932 mol$ of carbon atom

In 1 mol there are 6 moles of hydrogen atoms, then in 40.1060 moles of insecticide Paris Green :

$6\times 0.1233 mol=0.7398 mol$ of hydrogen atom

In 1 mol there are 10 moles of oxygen atoms, then in 40.1060 moles of insecticide Paris Green:

$10\times 0.1233mol=1.233 mol$ of oxygen atom

In 1 mol there are 4 moles of copper atoms, then in 40.1060 moles of insecticide Paris Green:

$4\times 0.1233 mol=0.4932 mol$ of nitrogen atom

In 1 mol there are 2 moles of arsenic atoms, then in 40.1060 moles of insecticide Paris Green :

$2\times 0.1233mol=0.2466 mol$ of fluorine

e. Mass of aspirin = 325 mg = 0.325 g

1 g = 1000 mg

Molar mas of aspirin = 180 g/mol

Moles of aspirin:

$\frac{0.325 g}{180 g}=0.001805 mol$

In 1 mol there are 9 moles of carbon atoms, then in 0.001805 moles of aspirin :

$2\times 0.001805 mol=0.003611 mol$ of carbon atom

In 1 mol there are 8 moles of hydrogen atoms, then in 0.001805 moles of aspirin:

$8\times 0.001805 mol=0.01444 mol$ of hydrogen atom

In 1 mol there are 4 moles of oxygen atoms, then in 0.001805 moles of aspirin:

$4\times 0.001805 mol=0.007222 mol$ of oxygen atom

Answer from: Quest

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

Answer from: Quest

Acovalent bond is formed between the two hydrogen bonds

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