Yes, there is more Hydrogen than anything else in the universe.
Most molecules which contain Oxygen also contain Hydrogen, and there is usually more Hydrogen than Oxygen within the molecule already, for example Water, H2O
(There are exceptions, such as Oxygen, O2 and Ozone, O3)
Yes, there is more oxygen than hydrogen in terms of weight. This is because oxygen is heavier than hydrogen so even though there may be more molecules of hydrogen, the overall weight is greater for oxygen.
In the universe, hydrogen. It makes up more than 90% of all matter. On Earth, oxygen, at about 50%.
A carbon-oxygen bond is more polar than a carbon-hydrogen bond, because the difference in electronegativity between carbon and oxygen is greater than the difference in electronegativity between carbon and hydrogen.
No
Hydrogen is dangerous than Helium because Hydrogen is a stronger gas than Helium.
Hydrogen contains no oxygen in its chemical structure. Water contains two hydrogen atoms and one oxygen atom.
You can tell that there is more oxygen in hydrogen peroxide than in water because hydrogen peroxide has an extra oxygen atom compared to water. The chemical formula for hydrogen peroxide is H2O2, while the formula for water is H2O. This extra oxygen in hydrogen peroxide makes it a more oxidizing chemical compared to water.
Oxygen is more abundant than hydrogen. In fact it is the most abundant element on Earth.
By number of atoms it has more hydrogen, by mass it has more oxygen. Each water molecule contains two hydrogen atoms and one oxygen atom. However, a typical oxygen atom has about 16 times the mass of a typical hydrogen atom.
Water is H2O. Hydrogen peroxide is H2O2. Hydrogen peroxide has one more oxygen atom per molecule than water. The extra oxygen is what makes it a peroxide. "Hydrogen oxide" would be water. The extra oxygen also makes hydrogen peroxide much more reactive than water due to the unstable oxygen-oxygen bond.
Oxygen is more electronegative than hydrogen in H2O. Oxygen has a stronger pull on electrons due to its higher electronegativity, causing it to attract the shared electrons more strongly in the water molecule.
Yes, hydrogen is more soluble in water than oxygen. Hydrogen is slightly soluble in water, whereas oxygen is only sparingly soluble. This is due to the difference in their molecular structures and properties.