What are the reaction types for the following?

1) Nal → Na + I₂

2) C ₂H₂ + O₂ → CO₂ +H₂O

3) Co+ CuSO₄ → CoSO₄ + Cu

4) SO₂ +H₂O → H₂SO₃

5) CaBr₂ +NA₂ CO₃ → CaCO₃ +NaBR

1. decomposition

2. combustion

3.single replacement

4. combination

5. double replacement

Explanation:

1. one compound is split into 2 elements

2. co2 and h20 was the product of the reaction

3. cu is replaced with co

4. 2 compounds become one compound

5. ca is replaced with na and na is replaced with ca

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l