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GenaCL600 [577]
3 years ago
15

Chromium (Cr) can combine with chlorine (Cl2) to form chromium chloride (CrCl3). Which equation is a correct representation of t

his reaction?. . A.. Cr + Cl2→ CrCl3. . B.. 2Cr + Cl2→CrCl3. . C.. 2Cr + 3Cl2→CrCl3. . D.. 2Cr + 3Cl2→ 2CrCl3
Chemistry
2 answers:
valkas [14]3 years ago
4 0
2 Cr + 3 Cl2 → 2 CrCl3  is correct representation for <span>Chromium (Cr) can combine with chlorine (Cl2) to form chromium chloride (CrCl3)
hope this helps</span>
dsp733 years ago
4 0
D. 2Cr + 3Cl2→ 2CrCl3
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Compound X has a molar mass of 416.48 g mol
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Answer:

P₂Cl₁₀

Explanation:

From the question given above, the following data were obtained:

Molar mass of compound X = 416.48 g/mol

Percentage of phosphorus (P) = 14.87%

Percentage of Chlorine (Cl) = 85.13%

Molecular formula of X =?

Next, we shall determine the empirical formula of compound X. This can be obtained as follow:

P = 14.87%

Cl = 85.13%

Divide by their molar mass

P = 14.87 / 31 = 0.480

Cl = 85.13 / 35.5 = 2.398

Divide by the smallest

P = 0.480 / 0.480 = 1

Cl = 2.398 / 0.480 = 5

Empirical formula of compound X is PCl₅

Finally, we shall determine the molecular formula of compound X. This can be obtained as follow:

Molar mass of compound X = 416.48 g/mol

Empirical formula = PCl₅

Molecular formula =?

Molecular formula= [Empirical formula]ₙ

[PCl₅]ₙ = 416.48

[31 + (35.5 × 5)]ₙ = 416.48

[31 + 177.5]n = 416.48

208.5n = 416.48

Divide both side by 208.5

n = 416.48 / 208.5

n = 2

Molecular formula = [PCl₅]ₙ

Molecular formula = [PCl₅]₂

Molecular formula = P₂Cl₁₀

Therefore, the molecular formula of compound X is P₂Cl₁₀

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