Answer:
Explanation:
We will need a balanced chemical equation with masses, moles, and molar masses.
1. Gather all the information in one place:
M_r: 2.016 17.03
3H₂ + N₂ ⟶ 2NH₃
m/g: 6.33 × 10⁻⁴
2. Calculate the moles of H₂
3. Calculate the moles of NH₃
The molar ratio is 2 mol NH₃/3 mol H₂.
4. Calculate the molecules of NH₃
There are 6.022 × 10²³ molecules of NH₃/1 mol NH₃.
Answer is: <span>main products of the combustion of methane and other fossil fuels are carbon(IV) oxide and water.
</span>Balanced chemical
reaction of combustion of methane:
CH₄ + 2O₂ → CO₂ + 2H₂<span>O.
</span>In this combustion reaction, carbon is oxidized (from -4 to +4 oxidation number) and oxygen is reduced (from 0 to -2 oxidation number).
Answer:
"Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity"
Copper is important in electrical works because copper has low resistivity, and therefore is an excellent conductor. Copper is also less oxidative than other metals.