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Lerok [7]
3 years ago
6

**CHEMISTRY!! PLEASE HELP ASAP!!**

Chemistry
1 answer:
Minchanka [31]3 years ago
6 0
Calcium = 1
Sulfur = 1
Oxygen = 4
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50 mL of a chlorofluorocarbon gas effused through a porous barrier in 157 seconds. The same volume of argon effused in 76 second
Anna11 [10]

Answer:

CCl_{2}FCF_{3}

Explanation:

To solve this equation we can use Graham's Law of effusion to calculate the molar mass of the chloroflourocarbon

\sqrt{\frac{M_{1} }{M_{2} } } = \frac{t_{1} }{t_{2} } \\\\\sqrt{\frac{M_{1} }{39.948 } } = \frac{157 }{76}\\\\\\M_{1}  = 170.477\\

Which chloroflorocarbon has this molar mass?

C2Cl2F4

7 0
3 years ago
Use this chemical equation to answer the question.
Maurinko [17]

Answer:

D. 4, 3, 2.

Explanation:

Oxygen exists as the molecule O2. So it is:

4Fe +  302  --->  2Fe2O3

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3 years ago
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In what way is DNA a code
Alex777 [14]

Answer:

Basically it is instructions of how some protein, organ, or pretty much any living organism is to be made. Similar to how different lines of code correspond to how to the software looks or behaves as, DNA acts as codes to make different organs, living beings, cells, pretty much all the living things.

Explanation:

7 0
3 years ago
A student has 0.75 L of a 5.0 M solution and dilutes it to make 3.5 liters. What’s the molarity of the diluted solution?
Marianna [84]

The molarity of the diluted solution : 1.1 M

<h3>Further explanation</h3>

Dilution is the process of adding solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

\tt n_1=n_2\\\\M_1.V_1=M_2.V_2

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

V₂ = Molarity volume of the solution after dilution

M₁=5

V₁=0.75

V₂=3.5

\tt M_2=\dfrac{M_1.V_1}{V_2}\\\\M_2=\dfrac{5\times 0.75}{3.5}\\\\M_2=1.07\approx 1.1

3 0
3 years ago
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