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
Answer:
1.2 g
Explanation:
<u>For gallium:-</u>
Mass of gallium= 4.00 g
Molar mass gallium = 69.723 g/mol
The formula for the calculation of moles is shown below:
Thus,
<u>For arsenic:-</u>
Mass of arsenic = 5.50 g
Molar mass of arsenic = 74.9216 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the given reaction:
1 mole of gallium react with 1 mole of Arsenic
0.0574 mole of gallium react with 0.0574 mole of Arsenic
Moles of arsenic required = 0.0574 moles
Available moles of arsenic = 0.0734 moles
Limiting reagent is the one which is present in small amount. Thus, gallium is limiting reagent.
Moles left unreacted of arsenic = 0.0734 moles - 0.0574 moles = 0.016 moles
<u>Mass = Moles * Molar mass = 0.016 * 74.9216 g = 1.2 g</u>
A) diamond
Because solids has the lowest microstates
Periodic table is arranged according to atomic size and other properties.