Use this picture to explain that an electrically charged object can attract an uncharged object without any contact. Your answer
1 answer:
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Answer:
6.9428 kg of CO2
Explanation:
1) Use Avogadro's number that states 1 mole = 6.022 x 10^23 particles. Convert 9.5 x 10^25 molecules into moles.
9.5 x 10^25 CO2 molecules = 157.75 moles CO2
2) Convert 157.75 moles of CO2 into grams. CO2's molar mass is 44.01g.
= 6942.79g
3) Convert 6942.79 grams into kilograms (divide by 1000):
6.9428 kg
Answer : The number of moles of ethane required will be 0.166 mole.
Explanation :
First we have to calculate the heat absorbed by water.
where,
q = heat absorbed = ?
m = mass of water = 851 g
c = specific heat of water =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get:
(1 kJ = 1000 J)
Now we have to calculate the moles of ethane required.
where,
= enthalpy of combustion of ethane = 1560.7 kJ/mol (standard value)
q = heat absorbed = 259.67 kJ
n = number of moles of ethane = ?
Therefore, the number of moles of ethane required will be 0.166 mole.