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erica [24]
3 years ago
10

Does any one know they answer? If soo explain!!!

Chemistry
1 answer:
____ [38]3 years ago
3 0

Answer

the answer is b

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How many moles of water are produced from the reaction of 50. 0g of methane.
Alja [10]

Answer:

Given the balanced equation

CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

we know that we'll get one mole CO2 for every 1 mole CH4.  So let's calculate how many moles are in 50 g of CH4 by dividing it's mass by it's molar mass (16 g/mole).  I get 3.125 moles.  The equation says we should get the same number of moles of CO2, so set moles CO2 = 3.125 moles.  Then we can find the mass of CO2 by multipying by the molar mass of CO2 (44 g/mole).  We should expect 138 grams of CO2.

Explanation:

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3 years ago
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Two linear hydrocarbons, Hexane (C6H14) and Heptane (C7H16), form pretty much an ideal solution at any composition. A solution i
Anettt [7]

Answer:

y_{C_6H_{14}}=0.92

Explanation:

Hello,

At first, we compute liquid-phase molar fractions:

n_{C_6H_{14}}=463.96 g*\frac{1mol}{86g} =5.3949molC_6H_{14}\\n_{C_7H_{16}}=667.71 g*\frac{1mol}{100g} =6.6771molC_7H_{16}\\x_{C_6H_{14}}=\frac{5.3949}{5.3949+6.6771} =0.447\\x_{C_7H_{16}}=1-x_{C_6H_{14}}=0.553

Now, by means of the fugacity concept, for hexane, for instance, we have:

f_{C_6H_{14}}^V=f_{C_6H_{14}}^L\\y_{C_6H_{14}}p_T=x_{C_6H_{14}}p_{C_6H_{14}}

In this manner, at 25 °C the vapor pressure of hexane and heptane are 0.198946 atm and 0.013912 atm repectively, thus, the total pressure is:

p_T=x_{C_6H_{14}}p_{C_6H_{14}}+x_{C_7H_{16}}p_{C_7H_{16}}\\p_T=0.447*0.198946 atm +0.553*0.013912 atm=0.096622atm

Finally, from the hexane's fugacity equation, we find its mole fraction in the vapour as:

y_{C_6H_{14}}=\frac{x_{C_6H_{14}}p_{C_6H_{14}}}{p_T}=\frac{0.447*0.198946 atm}{0.096622atm} \\y_{C_6H_{14}}=0.92

Best regards.

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3 years ago
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Can someone send the working and answer for this question with formulas used and all
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Answer:

its letter d ..................................

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What kind/s of energy transfers did you notice in each scenario?
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What scenario? I don't see a picture that helps me help you.
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How many elements are there
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There is 118 elements.
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