what is the atomic number of water?
149621
It is denoted by the 'O' (the O in H2O is oxygen). It contains 8 protons and 8 electrons. So the atomic number is 8. In addition to protons and electrons oxygen also has 8 neutrons.
50916
A mole is defined as Avogadro's number of particles of any kind of substance (atoms, molecules, or ions). Avogadro's number is approximately 6.022 × 1023. Thus 18.01508 grams of water contain 6.022 × 1023 water molecules. A glass of water, or 200 grams of water, therefore contains 6.6855 × 1024 water molecules.
85432
The water molecule has a total of 10 protons and 10 electrons (8 from the oxygen atom and 1 from each of the two hydrogen atoms). Since it has the same number of protons and electrons, the water molecule is neutral.
1293736
Number of molecules, hydrogen atoms and oxygen atoms present in 0.5 mole of water. 0.5 mol of water = molecules. Water is composed of 2 hydrogen atoms and one oxygen atom. 0.5 mol of water = 6.022× atoms of hydrogen.
720307
As an example, let's say we have a very tiny drop of water, say 1 microliter, which would have a mass of 0.001 grams. The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen (H) and one atom of oxygen (O).
280678
Water consists of 2 hydrogen atoms and 1 oxygen atom. Each hydrogen atom has 1 proton, no neutrons (assume all H are protonium) and 1 electron. The oxygen atom has 8 protons, 8 neutrons (most abundant isotope) and 8 electrons.
1349591
A mole of water is about 18 grams. A water molecule contains one oxygen atom and two hydrogen atoms. Considering an oxygen atom is sixteen times heavier than a hydrogen atom, 1 mole of water has roughly 2 grams of hydrogen. This is just an estimate from high school level chemistry.
505236
The second conversion factor reflects the number of atoms contained within each molecule. Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms.
1125294
( 1/4 of a mole) x (6.02 x 1023 atoms/mole) = approximately 1.5 x 1023 atoms. If you have a compound like H2O, then: one mole of water contains 6.02 x 1023 MOLECULES of water.
991700
Atomic number of an element shows the number of protons in the nucleus of that atom.
741829
You have 3.14 moles of water. For each mole of water, there are two moles of 'H' and one mole of 'O'. So there will be 2 X 3.14 moles of 'H' or 6.28 moles of hydrogen atoms, remembering that a hydrogen atom is simply 'H'.
522968
Since water has a chemical formula of H2O , there will be 2 moles of hydrogen in every mole of water. In one mole of water, there will exist approximately 6.02⋅1023 water molecules. So, there will be a total of 6.02⋅1023⋅2≈1.2⋅1024 hydrogen atoms.
1438510
Water is not found on the periodic table because it does not consist of a single element. ... Its formula is H2O and it can be broken down into its components, so it is not an element. The hydrogen and oxygen atoms of water do not contain the same number of protons as each other -- they are different substances.
1268545
Each hydrogen atom has 1 proton, no neutrons (assume all H are protonium) and 1 electron. The oxygen atom has 8 protons, 8 neutrons (most abundant isotope) and 8 electrons. Therefore, the water molecule has: 8 + 1 + 1 = 10 protons.
895944
There is one atom of oxygen, and two atoms of hydrogen in each water molecule, each molecule of water contains three atoms, making the formula H2O.
898559
Atomic number is the fundamental properties of an atom. Every atom is identified by its unique atomic number. Atomic number is denoted by 'z'. Atomic number is equal to the number of protons present in an atom.
1421790
It is equal to Avogadro's number (NA), namely 6.022 x1023. If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams. Since we only have 0.001 grams, that means that we have NA * (0.001/18) = 3.35*1019 molecules of water!