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storchak [24]
2 years ago
9

An atom has the following electron configuration.

Chemistry
1 answer:
otez555 [7]2 years ago
8 0

Explanation:

10 valence electron are there

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Aluminum fluoride contains only aluminum and fluorine. what is the formula for this compound?
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AlF3 would be the answer
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Given the following rate equation, complete the sentences to identify the reaction order for each reagent, the overall reaction
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1. First

2. Third

3. Fourth

4.remain the same as

Explanation:

Given the reaction equation;

Rate= k[A] [B]^3

We can see that the order of reaction is first order with respect to reactant A and third order with respect to reactant B. This gives an overall fourth order reaction.

If the concentration of A is doubled and that of B is halved. The rate of reaction remains the same.

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In a combustion analysis, the carbon in a hydrocarbon fuel is
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H2 + Cl2 --> 2HCl
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To make use of an ionic hydrate for storing solar energy, you place 422.0 kg of sodium sulfate decahydrate on your house roof. A
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Complete Question

To make use of an ionic hydrate for storing solar energy, you place 422.0 kg of sodium sulfate decahydrate on your house roof. Assuming complete reaction and 100% efficiency of heat transfer, how much heat (in kJ) is released to your house at night? Note that sodium sulfate decahydrate will transfer 354 kJ/mol.

Answer:

The amount of energy released is x = 4.63650 *10^5 KJ

Explanation:

Number of moles is mathematically represented as

                         n =\frac{mass}{Molar\ Mass}

substituting 422.0kg = 422 *10^3g for mass of sodium sulfate decahydrate(Na_2 SO_4 \cdot 10H_2 O), 322.2g/mol (This value is a constant )for the molar mass of sodium sulfate decahydrate

                        n= \frac{422*10^3}{322.2}

                           = 1309.7 \ moles

From the question we are told that

            1 mole of sodium sulfate decahydrate generates 354KJ of energy

         So  1309.7 mole would generate  x

Now stating the relation mathematically

                 1 mol → 354KJ

                 1309.7 mol → x

=>      x = 4.63650 *10^5 KJ

                   

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3 years ago
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