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what is the number of 2 mole O2?How many mole of
"相关结果约100,000,000个
A mole of oxygen molecules contains 2 moles of oxygen atoms. For elements that exist as molecules, it is best to explicitly state whether molecules or atoms are meant. Thus " 1 mole of oxygen molecules" means 6.022 x 10 23 O 2 molecules, or 2 x 6.022 x 10 23 O atoms; " 1 mole of oxygen atoms" means 6.022 x 10 23 O atoms.
How many atoms are in a mole of O2? Solution — 1 molecule of O2 = 2 oxygen atoms So, 1 mole of O2 = 2 mole oxygen atoms = 2 × 6.022 × 1023 = 12.044 ×1023 oxygen atoms. How many moles are in 100 grams? Answer and Explanation: There are approximately 5.55 moles of water in a 100-gram sample of water.
By applying mole concept, we can easily solve this problem.According to the concept, 1 mole contains 6.023 ×10^23 particles. So, 2moles of O2 contains 2× 6.023×10^23 molecule= 12.046 ×10^23 molecule . Now, 1 molecule of oxygen contains 2 atoms.
Answer: 6.02 × 1023. Explanation: One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms
The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mathematically, number of mole of O = 2 mole . number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number) substituting all the given values in the above equation, we ...
Two moles of O2 contain 4 moles or approximately 2.41 x 10^24 atoms of oxygen, as every O2 molecule consists of two oxygen atoms. Explanation: In chemistry, one mole of a substance contains Avogadro's number of entities (6.022 x 10^23).
To work it out, find the atomic or molecular mass of your substance and multiply it by the number of moles you have. For one mole, the atomic or molecular mass will be the same as the weight. How many atoms in a mole? There are 6.02214076×10 23 atoms in a mole. It is derived from the number of atoms in 12 g of the isotope carbon-12.
2 oxygen atoms Solution — 1 molecule of O2 = 2 oxygen atoms So, 1 mole of O2 = 2 mole oxygen atoms = 2 × 6.022 × 1023 = 12.044 ×1023 oxygen atoms. How many atoms are in each molecule? Molecule: group of two or more atoms held together by chemical bonds.
One mole of oxygen is $$15.9994\ g$$. but because oxygen is a diatomic molecule, it is bonded with itself. So, $$15.9994\ g\times 2=31.9988\ g$$ per mole of oxygen. There are two moles oxygen.
But these numbers are related to the number of things in a mole: the first and last numbers are two times Avogadro's number, while the second number is Avogadro's number. That means that the first and last numbers represent 2 mol, while the middle number is just 1 mol. Well, why not just use the number of moles in balancing the chemical equation?