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3 years ago

Which ionic compound is the most likely to dissolve in water?

Chemistry

2 answers:

harkovskaia [24]3 years ago

5 0

AC03 I am pretty sure

timurjin [86]3 years ago

5 0

Answer:

BaSO₄

Explanation:

Hello,

In this case, one could determine the compound most likely to be dissolved in water by locating the main nonmetal in the periodic table, thus, the farthest one from barium will lead to the formation of the most polar or ionic bond, which will be the most soluble, in such a way, since sulfur is farther than both carbon and phosphorous, BaSO₄ will be the compound most likely to be dissolved in water.

Best regards.

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Using the reaction below: 2 CO2(g) + 2 H2O(l) → C2H4(g) + 3 O2(g) ΔHrxn= +1411.1 kJ What would be the heat of reaction for this

maw [93]

Answer: d) -705.55 kJ

Explanation:

Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.

$2CO_2(g)+2H_2O(l)\rightarrow C_2H_4(g)+3O_2(g)$ $\Delta H=+1411.1kJ$

Reversing the reaction, changes the sign of $\Delta H$

$C_2H_4(g)+3O_2(g)\rightarrow 2CO_2(g)+2H_2O(l)$

$\Delta H=-1411.1kJ$

On multiplying the reaction by $\frac{1}{2}$ , enthalpy gets half:

$0.5C_2H_4(g)+1.5O_2(g)\rightarrow CO_2(g)+H_2O(l)$ $\Delta H=\frac{1}{2}\times -1411.1kJ=-705.55kJ/mol$

Thus the enthalpy change for the given reaction is -705.55kJ

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3 years ago

How many moles are there in 1.2 x 10^2 atoms of sulfur

Mariulka [41]

Avogadro's number tells you that in one mol of element (sulfur) there are 6.022x10^23 atoms...

So,

1 mol : 6.022x10^23 = x mol : 1.2x10^2

x = 1.99 x 10^-22 mol

*Although this should be correct, you might want to check your question again. You probably misinterpret the question... you want 1.2x10^23 !! :) check it.

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4 years ago

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vovangra [49]

Answer:

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Explanation:

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