Tag: oxides of non metal

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Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

The density of carbon dioxide is around:

  1. $2.98 {kg}/{{m}^{3}}$
  2. $1.98 {kg}/{{m}^{3}}$
  3. $5.0 {kg}/{{m}^{3}}$
  4. $10.0 {kg}/{{m}^{3}}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is colorless. At low concentrations, the gas is odorless. At higher concentrations it has a sharp, acidic odor. At standard temperature and pressure, the density of carbon dioxide is around $1.98  {kg}/{{m}^{3}}$, about $1.67$ times that of air.

Multiple choice chemistry air and atmosphere carbon dioxide - an oxide of carbon component of air - carbon dioxide oxides of non metal

Carbon dioxide exists in Earth's atmosphere as a:

  1. Metal

  2. Solid

  3. Trace gas

  4. Abundant gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about $0.04$ percent $\left(400   ppm\right)$ by volume. A trace gas is a gas which makes up less than $1$% by volume of the Earth's atmosphere.