Answer is: 0,1053 <span>moles of hydrogen are produced.
</span><span>
Chemical reaction: </span>2NH₃ → 3H₂ + N₂.<span>
n(N</span>₂) =
0,0351 mol..<span>
From chemical reaction: n(N</span>₂) : n(H₂) = 1 : 3.
n(H₂) = 3 · 0,0351 mol.
n(H₂) = 0,1053 mol.
n - amount of substance.
<u>Answer:</u> The molality of magnesium chloride is 1.58 m
<u>Explanation:</u>
To calculate the molality of solution, we use the equation:
Where,
= Given mass of solute (magnesium chloride) = 75.0
= Molar mass of solute (magnesium chloride) = 95.21 g/mol
= Mass of solvent = 500.0 g
Putting values in above equation, we get:
Hence, the molality of magnesium chloride is 1.58 m
The chemical reaction would most likely be written as follows:
A + B = AB
We cannot simply use the usual method of converting grams to moles since we do not have any idea on what are the identities of A and B. The only method we could use is to use the law of conservation of mass where mass inflow in a process should be equal to the mass out in the process. The total inflow of mass would be the mass of A and B and the outflow would be the product AB.
mass of A + mass of B = mass of AB
10.0 g A + 10.0 g B = mass of AB
mass of AB = 20.0 g
Answer =B) folding of rock
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means.