Question

8. Balance the following chemical equations
(1) NH3 + Br2 - N2 + NH,Br =
(ii) FeS2 + O2 → Fe2O3 + SO2​

Answer 1

Answer:

What does the parable of phytoplankton teach us? Phytoplankton is a single-celled grass that feed the entire southern ocean's marine life. These micro organisms require a low degree of temperature for their survival. But due to the overheating

Answer 2

Answer:

There are 20 questions sets in this review. The

corresponding answers can be found in the second half of

this document.

1. Match the term with its proper description.

1. Product A. A reaction in which a

single compound is broken

into simpler substances

2. Chemical equation B. A small whole number

that appears before a

formula in a chemical

equation

3. Decomposition reaction C. An equation that satisfies

the Law of Conservation of

Mass

4. Coefficient D. A concise representation

of a chemical reaction

5. Balanced equation E. A new substance formed

in a reaction

2. Identify the following reaction types.

1 CaCl2 + HNO3 ‡ Ca(NO3)2 + HCl

2 SO2 + H2O ‡ H2SO3

3 Pb(OH)2 ‡ PbO + H2O

4 NH3 + O2 ‡ N2 + H2O

5 CH4 + O2 ‡ CO2 + H2O

6 SiO2 + HF ‡ H2O + SiF4

7 C6H12O6 + O2 ‡ CO2 + H2O

Step-by-step explanation:

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