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3 years ago

PLEASE HELP! GIVING 22 POINTS!

2 answers:

7 0

Differences-
Canis latrans (Coyte) is smaller than Canis lupus (Gray Wolf).
Similarities-
They are both canines and carnivorous.
Hope this helped!
~Wolfe<3

Amiraneli [1.4K]3 years ago

7 0

Answer:Differences are that Canis latrans/'Coyte' is smaller than Canis lupus/'Gray Wolf'. and the similarities are both canines and carnivorous

Explanation:

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A gaseous mixture composed of 20% CH4, 30% C2H4, 35% C2H2, and 15% C2H20. What is the average molecular weight of the mixture? a

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Answer: The correct answer is Option d.

Explanation:

We are given:

Mass percentage of $CH_4$ = 20 %

So, mole fraction of $CH_4$ = 0.2

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So, mole fraction of $C_2H_4$ = 0.3

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Mass percentage of $C_2H_2O$ = 15 %

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We know that:

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Molar mass of $C_2H_4$ = 28 g/mol

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Molar mass of $C_2H_2O$ = 48 g/mol

To calculate the average molecular mass of the mixture, we use the equation:

$\text{Average molecular weight of mixture}=\frac{_{i=1}^n\sum{\chi_im_i}}{n_i}$

where,

$\chi_i$ = mole fractions of i-th species

$m_i$ = molar masses of i-th species

$n_i$ = number of observations

Putting values in above equation:

$\text{Average molecular weight}=\frac{(\chi_{CH_4}\times M_{CH_4})+(\chi_{C_2H_4}\times M_{C_2H_4})+(\chi_{C_2H_2}\times M_{C_2H_2})+(\chi_{C_2H_2O}\times M_{C_2H_2O})}{4}$

$\text{Average molecular weight of mixture}=\frac{(0.20\times 16)+(0.30\times 28)+(0.35\times 26)+(0.15\times 42)}{4}\\\\\text{Average molecular weight of mixture}=6.75$

Hence, the correct answer is Option d.

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