Which of the Following Are Combination Reactions

question 17

Multiple Choice

Which of the following are combination reactions?
1.CH₄ (g) + O₂ (g) → CO2 (g) + H2O (l)
2.CaO (s) + CO₂ (g) → CaCO₃ (s)
3.Mg (s) + O2(g) → MgO (s)
4.PbCO₃ (s) → PbO (s) + CO₂ (g)

• A) 1, 2, and 3
• B) 2 and 3
• C) 1, 2, 3, and 4
• D) 4 only
• E) 2, 3, and 4

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Definitions:

Genetic Female

Refers to individuals whose sex chromosomes are XX, typically associated with female sexual and reproductive anatomy.

Estrogen

A group of steroid hormones that play an essential role in the development and regulation of the female reproductive system and secondary sexual characteristics.

Testosterone

A type of steroid hormone essential for developing male reproductive organs and secondary sexual traits.

Prenatal Development

The process of growth and development within the womb from conception to birth, comprising various stages including the embryonic and fetal stages.