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gtnhenbr [62]
3 years ago
13

Question 25 of 26

Chemistry
1 answer:
denis-greek [22]3 years ago
6 0

Answer:

Total mass of leaked fluorine in six months= 0.405 kg

Explanation:

From the given,

Leaked mass of freon = 35.12 gm

Molecular mass of freon = C_{2}H_{2}F_{3}Cl = (2\times 12)+(2\times1)+(3\times19)+(1\times35.5)=118.5g/mol

Total weeks per month = 4

Fluorine released into the air in total weeks = 6/times4=24

3 molecules of fluorine is present in the freonC_{2}H_{2}F_{3}Cl

{\tex Mass\,leak\,rate\,of\,fluorine}\,= \frac{Mass\,of\,fluorine\,in\,freon}{Molecularmass\,of\,freon}\times leak\,rate

\frac{19\times 3}{118.5}\times 35.12=16.8gm/week

Total mass of fluorine leaked in six months = 24\times16.9=405.6gm= 0.405 kg

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Hey there!

Cu(CN)₂

Find the molar mass.

Cu: 1 x 63.546 = 63.546

C: 2 x 12.01 = 24.02

N: 2 x 14.07 = 28.14

-----------------------------------

                      115.706 grams

The mass of one mole of Cu(CN)₂ is 115.706 grams.

We have 4 moles.

115.706 x 4 = 463

4.00 moles of Cu(CN)₂ has a mass of 463 grams.

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