which gases are found in mars and venus?

Question

need to know the gases here

Answer 1

Venus has an extremely thick atmosphere, which consists mainly of carbon dioxide and a small amount of nitrogen. The enormously CO2-rich atmosphere generates a strong greenhouse effect that raises the surface temperature to over 400 °C.

~96.5% Carbon dioxide
~3.5% Nitrogen
.015% Sulfur dioxide
.007% Argon
.002% Water vapor
.0017% Carbon monoxide
.0012% Helium
.0007% Neon
trace Carbonyl sulfide
trace Hydrogen chloride
trace Hydrogen fluoride

The atmosphere on Mars consists of 95% carbon dioxide, 3% nitrogen, 1.6% argon, and contains traces of oxygen and water. The atmosphere is quite dusty, containing dust particulates of about 1.5 µm across which give the Martian sky a tawny color when seen from the surface.

95.72% Carbon dioxide
2.7% Nitrogen
1.6% Argon
0.2% Oxygen
0.07% Carbon monoxide
0.03% Water vapor
0.01% Nitric oxide
2.5 ppm Neon
300 ppb Krypton
130 ppb Formaldehyde
80 ppb Xenon
30 ppb Ozone
10 ppb Methane

ppb - "parts-per" notations are used to denote low concentrations of chemical elements. In this case, parts-per billion.

Answer 2

Venus: atmosphere is mainly carbon dioxide, while its thick clouds are composed of sulfuric acid.

Mars: Mars has a very thin atmosphere composed mostly of the tiny amount of remaining carbon dioxide (95.3%) plus nitrogen (2.7%), argon (1.6%) and traces of oxygen (0.15%) and water (0.03%).

Answer 3

Mars is primarily carbon dioxide. Venus is primarily sulphuric acid vapor and sulphur.