Answer: D) 1.00 g
Explanation:
According to the Avogadro's law, the volume of gas is directly proportional to the number of moles of gas at same pressure and temperature. That means,
or,
where,
= initial volume of gas = 2.00 L
= final volume of gas = 3.00 L
= initial moles of gas =
= final moles of gas = ?
Now we put all the given values in this formula, we get
Mass of helium =
Thus mass of helium added = (3.00-2.00) g = 1.00 g
Answer: ?
Explanation: I translated this and It makes no sense.
Tôi đã dịch điều này và nó không có ý nghĩa.
<span>V = 24.0 mL + (35.2 g)(mL/10.5g) = I think i'm not all that sure but I think its this.</span>
Answer:
1.03 grams / mL
Explanation:
Mass of beaker and sample liquid = 84.64
Mass of beaker = <u>32.344</u>
Mass of the sample (subtract) = 52.296
Don't do any rounding until you are finished.
mass = 52.296 grams
volume = 50.6 mL
density = mass / volume
density = 52.296/50.6
density = 1.034 grams / mL
Rounding
The volume only has 3 dig digs
So the answer is 1.03 grams / mL
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