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Makovka662 [10]

4 years ago

7

In the formula for the compound XCl4, the X could represent (1) C (3) Mg (2) Η (4) Zn

2 answers:

Anvisha [2.4K]4 years ago

7 0

Correct Answer: option 1 i.e. C

Reason:
The the compound of interest i.e. XCl4, since there are 4 Cl atoms bonded to X. This signifies that the valency of X is 4.

There atomic number of C is 6. It's electronic configuration is giving by 1s2 2s2 2p2. Thus, there are 4 electrons in valence shell of C. This signifies that valency of C is 4. Hence the compound present in present case is CCl4.

Genrish500 [490]4 years ago

3 0

(1) C.

The name of the compound is Carbon Tetra Chloride. None of the other elements clearly forms a compound with Cl in that form.

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Explanation:

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$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

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Given mass of iron = 930 kg = 930000 g (1kg=1000g)

Molar mass of iron = 56 g/mol

Putting values in equation 1, we get:

$\text{Moles of iron}=\frac{930000g}{56g/mol}=16607mol$

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By Stoichiometry of the reaction:

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Mass of $Fe_2O_3$ = $moles\times {\text {molar mass}}=8303\times 160=1328480g=1328kg$

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