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Darya [45]
3 years ago
12

11. Calculate the energy required to produce 12.00 mol of CI207 on the basis of the

Chemistry
1 answer:
Ber [7]3 years ago
4 0

Answer: 780 kcal are required to produce 12.00 mol of Cl_2O_7

Explanation:

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and written along with reactants.

The balanced chemical reaction is:

2Cl_2(g)+7O_2(g)+130kcal\rightarrow 2Cl_2O_7(g)

According to stoichiometry :

2 moles of Cl_2O_7 are produced by absorption of energy = 130 kcal

Thus 12.00 moles of Cl_2O_7 are produced by absorption of energy = \frac{130}{2}\times 12.00=780kcal

Thus 780 kcal are required to produce 12.00 mol of Cl_2O_7

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In a 71.4 g sample of nahco 3 3 ​ , how many grams of sodium are present?
sweet [91]

There are 19.5 g Na in 71.4 g NaHCO₃

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1 Na = 1 × 22.99 u = 22.99   u

1 H   = 1 × 1.008 u =    1.008 u

1 C   = 1 × 12.01  u =  12.01    u

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4 0
3 years ago
Is the following compound symmetrical going across?
Nataliya [291]

Answer:

Yes

Explanation:

A molecule has a center of symmetry when, for any atom in the molecule, an identical atom exists diametrically opposite this center an equal distance from it(Wikipedia).

A center of symmetry is said to exist in a molecule when reflection of all parts of the molecule through the center of symmetry produces an indistinguishable configuration(Housecroeft and Sharpe,2012)

Obviously, the Cl2 molecule has a center of symmetry, hence it is symmetrical. Reflection of the molecules through its center of symmetry produces an indistinguishable configuration.

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