Name and describe three of the five branches of chemistry.
2 answers:
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Answer:
B. Periods
Explanation:
The horizontal rows in the periodic table are periods.
on the picture below, u can see an example
Answer:
Explanation:
See attached table.
Note that:
1 mole = 6.02x10^23
Molar mass is grams/mole. For the elements, the atomic mass is the same number as molar mass, just expressed as grams/mole.
Mass of ammonia produced : 121.38 g
<h3>Further explanation</h3>Given
Reaction
3H₂(g) + N₂(g) ⇒ 2NH₃(g)
100g of N₂
Required
Ammonia produced
Solution
mol of N₂ :
From the equation, mol ratio of N₂ and NH₃ = 1 : 2, so mol NH₃ :
mass of NH₃(MW=17 g/mol) :