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What is the percentage by mass of different elements in methane?
Wiki User
∙ 6y ago
Methane is composed of only carbon (C) and hydrogen (H). It has the formula of CH4. Total molar mass = 12 + 4 = 16.Mass % Carbon = 12/16 (x100%) = 75%
Mass % Hydrogen = 4/16 (x100%) = 25%
Wiki User
∙ 6y ago
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Percent of hydrogen in methane?
Percentage of hydrogen in methane is 25%. Percentage of hydrogen = mass of hydrogen/mass of methane x 100 mass of hydrogen = 1 x 4= 4 and mass of carbon = 12. Since methane has 4 hydrogen atoms and one carbon atom therefore mass of methane = 16 Percentage of hydrogen = 4/16 x 100 =25
When methane burns carbon dioxide and water are formed The mass of carbon dioxide plus the mass of water equal the mass of the methane plus the mass of OXYGEN?
When methane burns, the carbon dioxide and water formed, equal the mass of the methane plus the mass of the oxygen.
How do you get the percentage of the elements presents in a compound?
Type your answer here... find from mass number
Mass number Why is it not the number on the periodic table?
Elements have different isotopes and each isotope will have different atomic mass. As such it is not possible to list the mass number of all the isotopes on the periodic table. However, the atomic mass is generally given on the periodic table which is generally calculated taking into account all the isotopes and its percentage.
How do you get a cumulative percentage having a mass percentage?
You cannot. The two are different things!
Are all sample of elements are composed of atoms with same atomic mass?
All atoms in a pure sample of one element have the same mass. The atoms in a different element have a different mass. Different atoms is what makes different elements.
Atoms of different elements are what?
Atoms of different elements have no specific relationship but if they have same no of neutrons then they are isotones, if they have same mass no then they are isobars, atomic no of two elements can neither be same.
Why the combined mass of CO2 and H2O produced in the combustion analysis of methane greater than mass of the methane sample being analysed?
The mass of reactants is equal to the mass of products.
Why is air a matter?
Air consists of a variety of different gases in relative proportions. Air is composed of oxygen, nitrogen, carbon dioxide, methane, and other elements and compounds. These elements and compounds have a mass and they take up space. Matter is defined as anything that has mass and takes up space (matter has a mass and volume). Air is matter because it fits the definition of matter (based on its properties and how we currently think about matter).
What makes elements different?
the thing that makes elements different is the fact that they all have different amount of protons, electrons and neutrons. They all, also, have different mass #'s.
Does atoms have mass?
Atoms are matter, and all matter has mass. In that light, any (and every) atom has mass. Different atoms of different elements have different masses, as you would expect. As atomic numbers increase, the Atomic Mass of an atom increases, but we also need to account for the different isotopes of different elements. Isotopes are different "configurations" of the same element where there are different numbers of neutrons in the nucleus. This gives rise to different masses for different elements, and also for different isotopes of the elements. There is more to this discussion, and there are other questions here that are already posted and answered. Some of them are linked below.
What is the difference between isobar and isotope?
isobars are elements with same mass numbers (Atomic Mass) and different atomic number (number of proton or electron)
