1 answer:
Answer:
33 g
Explanation:
Given data:
Number of moles = 5 mol
Mass of compound = 165 g
Molar mass or gram formula mass = ?
Solution:
Formula:
Number of moles = mass/ molar mass
Now we will put the values in formula.
5 mol = 165 g/ gram formula mass
Gram formula mass = 165 g / 5 mol
Gram formula mass = 33 g/mol
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Answer:
6,8 g
Explanation:
c = 4.18 J/(g * °C) = 4180 J / (kg * °C)
= 25 °C
= 36,4 °C
Q = 325 J
The formula is: Q = c * m * (
)
m =
Calculating:
m = 325 / 4180 * (36,4 - 25) ≈ 0,0068 kg = 6,8 g
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