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3 years ago

How many gramsare in 3.0 moles of KCI(potassium chloride)?

Chemistry

1 answer:

Ganezh [65]3 years ago

7 0

Answer: I thinc 223.6539

Explanation:

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What happens to a reducing agent during a redox reaction?

Nuetrik [128]

Reducing agent is an compound/atom, that loses an electron and is oxidized.

0.........+I.............+II............0
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Calcium is oxidized --- it's reducing agent (reductant).
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2 years ago

Which describes the polarity in a water molecule?

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3 years ago

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tia_tia [17]

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3 years ago

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Calculate ∆G ◦ r for the decomposition of mercury(II) oxide 2 HgO(s) → 2 Hg(ℓ) + O2(g) ∆H◦ f −90.83 − − (kJ · mol−1 ) ∆S ◦ m 70.

bagirrra123 [75]

Answer:

4. +117,1 kJ/mol

Explanation:

ΔG of a reaction is:

ΔGr = ΔHr - TΔSr (1)

For the reaction:

2 HgO(s) → 2 Hg(l) + O₂(g)

ΔHr: 2ΔHf Hg(l) + ΔHf O₂(g) - 2ΔHf HgO(s)

As ΔHf of Hg(l) and ΔHf O₂(g) are 0:

ΔHr: - 2ΔHf HgO(s) = 181,66 kJ/mol

In the same way ΔSr is:

ΔSr= 2ΔS° Hg(l) + ΔS° O₂(g) - 2ΔS° HgO(s)

ΔSr= 2* 76,02J/Kmol + 205,14 J/Kmol - 2*70,19 J/Kmol

ΔSr= 216,8 J/Kmol = 0,216 kJ/Kmol

Thus, ΔGr at 298K is:

ΔGr = 181,66 kJ/mol - 298K*0,216kJ/Kmol

ΔGr = +117,3 kJ/mol ≈ 4. +117,1 kJ/mol

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3 years ago

How many atoms of phosphorus are in 3.80 mol of copper(II) phosphate?

Sladkaya [172]

Wouldn't you take Avogadro' number and multiply by 3.80 maybe

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3 years ago

How many gramsare in 3.0 moles of KCI(potassium chloride)?​

How many gramsare in 3.0 moles of KCI(potassium chloride)?