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Lana71 [14]
3 years ago
7

How did john dalton explain a chemical reaction using his atomic theory?

Chemistry
1 answer:
Archy [21]3 years ago
7 0
Hi! Dalton said that the atoms of reactants are rearranged to form new substances as products.
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Which of these is the final result of secondadry succession?
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Answer:

a

Explanation:

ADAPTATIOnn but if thhere would be an option o all the above it would be that

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Which of the following can form a hydrogen bond with the HF molecule?
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helium

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helium

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6 0
2 years ago
Compared to an atom of C-12, an atom of C-14 has
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Explanation:

Carbon-12 atoms have stable nuclei because of the 1:1 ratio of protons and neutrons.

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8 0
3 years ago
The oxidation of copper(I) oxide, Cu 2 O ( s ) , to copper(II) oxide, CuO ( s ) , is an exothermic process. 2 Cu 2 O ( s ) + O 2
ICE Princess25 [194]

Answer:

The energy released as heat when 9.94 g Cu 2 O ( s ) undergo oxidation at constant pressure is -10.142 kJ

Explanation:

Here we have

2Cu₂O ( s ) + O₂ ( g ) ⟶ 4 CuO ( s ) Δ H ∘ rxn = − 292.0 kJ mol

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Therefore,

1 Moles of Cu₂O (copper (I) oxide) react with 0.5 mole of O₂ to produce 2 moles of CuO, with the release of − 146.0 kJ  of energy

We have 9.94 g of Cu₂O with molar mass given as 143.09 g/mol

Hence the number of moles in 9.94 g of Cu₂O is given as

9.94/143.09 = 6.95 × 10⁻² moles of Cu₂O

6.95 × 10⁻² moles of Cu₂O will therefore produce 6.95 × 10⁻² ×  − 146.0 kJ mol  or -10.142 kJ.

3 0
3 years ago
The residue of coal decomposition that is used in the manufacture of steel is called: 1. coal gas 2. coke 3. coal tar
bagirrra123 [75]
The residue of coal decomposition in the manufacture of steel is coal tar. It is a by product of the coking process in the blast furnace. Coal gas is another by product but is not the answer becuase this is not a residue which is a solid. Coal gas is a gas. Coke in fact is one of the reactants fed for steel making. Answer is choice 3.
5 0
3 years ago
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