Write the complete word equation for the combustion of methane (CH4(g))
1 answer:
Answer:
See the explanation.
Explanation:
Hydrocarbons on combustion give carbon dioxide and water.
Hydrocarbons contain all kinds of saturated and unsaturated ones.
Alkanes on reaction with oxygen gives carbon dioxide and water.
Alkenes on reaction with oxygen gives carbon dioxide and water.
Alkynes on reaction with oxygen gives carbon dioxide and water.
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Answer:
see the answer at the pic
Number of moles is defined as the ratio of given mass in g to the molar mass.
The mathematical formula is:
Number of moles = (1)
Number of zinc atoms is equal to , by Avogadro number, number of moles can be calculated.
As, 1 mol= atoms, hence,
= 0.2822 mol
Now, from formula (1), calculate mass in g (molar mass of zinc = 65.4 g/mol)
0.2822 mol =
mass in g =
= 18.45588 g
Thus, by rounding off the above number, it will come near about 19 g approximately.
Hence, option (C) is the correct answer.