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3 years ago

How many moles of carbon in 130g of C2H6

2 answers:

5 0

7.22 moles of C2H6. Since there are 2 carbon atoms per C2H6, we must multiply the number of moles of C2H6 by 2 to get the number of moles of Carbon which is 14.4 or 14 if using two sig figs.

Gre4nikov [31]3 years ago

5 0

C2H6's molar mass is (12+12+6) = 30 grams. if we use stoichiometry we find that
130 grams of C2H6 holds approximately 4.33 moles of the molecule. If we know that there are 2 moles of pure carbon person 1 mole of ethane(C2H6) we can use stoichiometry once more to multiply 2 by 4.33 to find the number of moles of carbon in 130 grams of ethane which is approximately 8.67 moles.

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How many liters of CO2 are formed by burning 7 x 1025 molecules of C2H4 with excess oxygen?

S_A_V [24]

Answer:

ESTA!!!!1

Explanation:

5 0

2 years ago

What volume of CH4(g), measured at 25oC and 745 Torr, must be burned in excess oxygen to release 1.00 x 106 kJ of heat to the su

anastassius [24]

Answer:

$V=27992L=28.00m^3$

Explanation:

Hello,

In this case, the combustion of methane is shown below:

$CH_4+2O_2\rightarrow CO_2+2H_2O$

And has a heat of combustion of −890.8 kJ/mol, for which the burnt moles are:

$n_{CH_4}=\frac{-1.00x10^6kJ}{-890.8kJ/mol}= 1122.6molCH_4$

Whereas is consider the total released heat to the surroundings (negative as it is exiting heat) and the aforementioned heat of combustion. Then, by using the ideal gas equation, we are able to compute the volume at 25 °C (298K) and 745 torr (0.98 atm) that must be measured:

$PV=nRT\\\\V=\frac{nRT}{P}=\frac{1122.6mol*0.082\frac{atm*L}{mol*K}*298K}{0.98atm}\\\\V=27992L=28.00m^3$

Best regards.

8 0

3 years ago

The water cycle would not be possible without ______ and ________.

ipn [44]

Answer:

I think it's 4

Explanation:

but I don't really remember the water cycle

4 0

3 years ago

2. When the vapor pressure of water is 80 kpa the temperature of the

timofeeve [1]

Answer:

103

Explanation:

3 0

2 years ago

Think of Earth's shape. How does the shape of Earth affect the amount of heat different

diamong [38]

Answer: The Earth is an oblate spheroid which is more elongated along the equator.

Regions along the equator receives more amount of direct sunlight from the sun causing higher temperatures along the region. While places along the poles receives less amount of heat since heat is scattered in a larger area due to the shape of the Earth around the poles.

Explanation: So places along the equator experiences higher temperature due to the direct hit of sunlight. And places along the polar regions experiences cooler temperature since it receives less amount of sunlight.

8 0

3 years ago