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borishaifa [10]
3 years ago
5

"The composting process is the A conversion of organic waste into soil conditioners or mulch. B.redesign of chemical processes t

o reduce environmental harm. C.recycling of hazardous materials into gardening resources. D.combustion of chlorine compounds into nontoxic gases."
Chemistry
1 answer:
dimulka [17.4K]3 years ago
6 0

Answer:

hello there i pretty sure its A. conversion of organic waste into soil conditioners or mulch

Explanation:

i took a test and had help from my teacher.

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Answer:

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3 years ago
How many moles are equal to 1.20 x 1024 atoms of sulfur?
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Freon−12 (CF2Cl2), widely used as a refrigerant and aerosol propellant, is a dangerous air pollutant. In the troposphere, it tra
nevsk [136]

Answer:

141g of CCl₄

Explanation:

First, we have to write the balanced equation.

CCl₄(g) + 2 HF(g) ⇄ CF₂Cl₂(g) + 2 HCl(g)

We can calculate how many moles of CF₂Cl₂ using the ideal gas equation.

V = 14.9 dm³ = 14.9 L

T = 21°C + 273.15 = 294.15 K

P = 1.48 atm

R = 0.08206 atm.L/mol.K

P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{1.48atm.14.9L}{0.08206\frac{atm.L}{mol.K}.294.15K }=0.914mol

We can use proportions to find the mass of CCl₄ required to obtain 0.914 moles of CF₂Cl₂. According to the balanced equation, 1 mol of CF₂Cl₂ is produced when 1 mol of CCl₄ reacts. And the molar mass of CCl₄ is 154 g/mol.

0.914molCF_{2}Cl_{2}.\frac{1molCCl_{4}}{1molCF_{2}Cl_{2}} .\frac{154gCCl_{4}}{1molCCl_{4}} =141gCCl_{4}

7 0
3 years ago
Four students measure the length of a paper clip whose actual length is 3.2 cm. whose measurements are precise but not accurate?
Bingel [31]

Answer:

A. Samuel

Explanation:

although he is not right he gets the same measurement several times

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