Answer:
I'm guessing that the underlined word is barbarous ... if so the correct answer would be uncivilized.
Explanation:
The chemical formula for steam is H2O(g)
mass of steam = mole of steam * molar mass of H2O
= 1 * (1*2+16) = 18 g
by E = m * c * change in temperature,
From 140C steam to 100C steam
18 * 2.01 * (140-100) = 1447.2J
latent heat of vaporization of water = 2.26x10^6 J/kg* 0.018 = 40680 J
From 100C water to 0C water
18 * 4.2 * (100-0) = 7560 J
latent heat of fusion of ice = 334 J/g * 18 g = 6012 J
From 0C ice to -45C ice
18 * 2.09 * (45-0)
= 1692.9 J
1447.2 + 40680 + 7560 + 6012 + 1692.9 = 57392.1 J
Hello!
The general chemical reaction for the combustion of a fossil fuel is the following one:
C(s) + O₂(g) → CO₂(g)
Now, we use the following conversion factor to go from kilograms of CO₂ to kilograms of O₂, using the molar masses of each compound and the reaction coefficients:
So, for producing 5*10¹² kg of CO₂,
3,64*10¹² kg of O₂ are required.
Have a nice day!