Mostly Hydrogen, a little Helium, and very small amounts of all the other natural elements.
No, the solar nebula was primarily composed of hydrogen and helium, with trace amounts of other elements like carbon and iron. The solar system formed from the gravitational collapse of this nebula, leading to the formation of the Sun and planets.
Mostly Hydrogen, a little Helium, and very small amounts of all the other natural elements.
Roughly 2% of the mass of the solar nebula consisted of elements other than hydrogen and helium. These elements include heavier elements like carbon, oxygen, and iron that were essential for the formation of planets and other celestial bodies.
light gasses (H, He) ... hydrogen compounds (H2O CH4 NH3)...rocks...metal
mostly iron and carbon but there are three other elements.
mostly Co2 SOME air but not much!! :$:
Steel is neither, but it is a mixture of iron with carbon
Venus is made up of an iron core and rocky mantle. While it's atmosphere mostly consists of carbon dioxide and nitrogen.
Mostly mild steel. Steel is iron with a bit of carbon alloyed into the metal.
steel is an alloy consisting mostly of iron and carbon. The carbon content present in the alloy is about 0.2 to 1.7 % by weight.
The amount of helium compared to other elements differ but a nebula occurs so late in a stars lifetime that heavy elements have been synthesized. A nebula is thus often a complex combination of several elements mostly between helium and iron.
Steel, an alloy, is mostly iron, so it is defined by the amount of other elements in it. Steel contains around 1% carbon. Other alloys, like stainless steel as an example, have 11% and even a bit more of chromium. There are literally dozens of steels, and dozens of ways to treat a given steel to obtain different properties.