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Tnaaasty5901
25.07.2019 •
Chemistry
Assuming the reactants are balanced and we start with 5 carbon dioxide molecules and 10 water molecules, how many oxygen atoms would you expect to find in the products
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Ответ:
CO₂ + 2 H₂O → CH₄ + 2 O₂
According to this equation,
1 Molecule ( 1 mole) of CO₂ reacts with 2 Molecules ( 2 moles) of H₂O to produce 1 Molecule ( 1 mole) of CH₄ and 2 Molecules ( 2 moles) of O₂.
So, if we take 5 molecules of CO₂ and 10 molecules of CH₄, it means we have multiplied the equation with 5. So, the equation will be,
5 CO₂ + 10 H₂O → 5 CH₄ + 10 O₂
As there are 10 molecules of O₂ formed and each oxygen molecule contains 2 oxygen atoms, so the number of atoms in 190 molecules will be,
= 10 × 2
= 20 Atoms of Oxygen
Ответ:
30.8 g of water are produced
Explanation:
First of all we need the equation for the production of water:
2H₂ + O₂ → 2H₂O
2 moles of hydrogen react with 1 mol of oxygen in order to produce 2 moles of water.
As we assume, the oxygen in excess, we determine the moles of H₂.
1.03ₓ10²⁴ molecules . 1 mol/ 6.02ₓ10²³ molecules = 1.71 moles
Ratio is 2:2, so 1.71 moles will produce 1.71 moles of water
Let's convert the moles to mass: 1.71 mol . 18g / 1mol = 30.8 g of water are produced