How many moles are in 54g of sliver
1 answer:
Answer:
0.50 mols Ag
Explanation:
Given the data, we have:
mass= 54g
molar mass of Silver (Ag): 107.8 g/mol
We want moles, we can convert grams > moles using the molar mass as a "bridge" between the 2.
Keeping an eye on the units, we'll see 54g get cancelled out by 107.8 g/mol and we'll be left with moles of Silver.
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We know that the boiling temperature of the water depends on the atmospheric pressure.
Here we will find that the atmospheric pressure is 760.62 torr.
To get the atmospheric pressure we need to analyze the given information.
Boiling temperature = 79.0°C
∆Hvap = 40.7 kJ/mol
The equation we need to use is:
Where:
p₁ = 1 atm
p₂ = what we want to know.
n*R = 8.314 J/K*mol
T₁ = (100° + 273.15°) = 374.15°
T₂ = (79.0 + 273.15°) = 352.15°K
We can replace all that in the equation to get:
And we want this in torr:
1 atm = 760 torr.
Then 1.000817 atm = 760.62 torr.
This is the pressure at the mountain.
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