Question

Pb+ O2→ 2) Hg + HNO3→ 3) Mg + H3PO4 → 4) Ca +F2 → 5) Na + N2 → СРОЧНООО ПОЖАЛУЙСТААА

Answer 1

Ответ:

1) Pb+ O2→ PbO2

2) 3Hg + 8HNO3 → 3Hg(NO3)2 + 2NO + 4H2O

3) 3Mg + 2H3PO4 → Mg3(PO4)2 + 3H2

4) Ca +F2 →CaF2

5) N2 + 6Na → 2Na3N

Answer 2

1. PbO2 (lead dioxide) is formed as a product.
2. Hg (mercury) reacts with HNO3 (nitric acid) to produce Hg(NO3)2 (mercury(II) nitrate) and other products depending on the reaction conditions.
3. Mg (magnesium) reacts with H3PO4 (phosphoric acid) to produce MgHPO4 (magnesium hydrogen phosphate) and hydrogen gas (H2) is evolved.
4. Ca (calcium) reacts with F2 (fluorine) to produce CaF2 (calcium fluoride).
5. Na (sodium) reacts with N2 (nitrogen gas) under appropriate conditions to form NaN3 (sodium azide).

Please note that these reactions should be performed with appropriate safety precautions, as some of them involve potentially hazardous chemicals. Additionally, the specific conditions and products may vary depending on factors such as temperature, pressure, and concentrations of reactants. If you need further details about these reactions or their conditions, please provide more information.