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3 years ago

Which of the following terms refers to the number of moles of solute per liter of solution?

1 answer:

5 0

Molarity
Molarity is a unit used to express the concentration of a substance, and it is defined as the number of moles of solute per decimeter cubed (liter) of solvent.

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2) which statement describes ionic bonding?

garik1379 [7]

Answer

odpowiedzi d

Explanation

taka jest reguła

7 0

3 years ago

At 25°C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.

stealth61 [152]

Answer : The value of $\Delta H$ for the reaction is, -565.6 kJ

Explanation :

First we have to calculate the molar mass of CO.

Molar mass CO = Atomic mass of C + Atomic mass of O = 12 + 16 = 28 g/mole

Now we have to calculate the moles of CO.

$\text{Moles of }CO=\frac{\text{Mass of }CO}{\text{Molar mass of }CO}=\frac{1g}{28g/mole}=\frac{1}{28}mole$

Now we have to calculate the value of $\Delta H$ for the reaction.

The balanced equation will be,

$2CO(g)+O_2(g)\rightarrow 2CO_2(g)$

From the balanced chemical reaction we conclude that,

As, $\frac{1}{28}mole$ of CO release heat = 10.1 kJ

So, 2 mole of CO release heat = $2\times 28\times 10.1=565.6kJ$

Therefore, the value of $\Delta H$ for the reaction is, -565.6 kJ (The negative sign indicates the amount of energy is released)

4 0

3 years ago

If oxygen is removed from a sample of air as iron nusts, what happens to the partial pressure of oxygen in the air?

trasher [3.6K]

Answer:

It increases because the less oxygen the more pressure there will be on that specific object

Explanation:

3 0

3 years ago

Which reaction below occurs spontaneously upon mixing the reagents shown?

den301095 [7]

Co2 is correct buddy

3 0

3 years ago

What can be said about the spontaneity of this reaction? cdiamond→cgraphite

anastassius [24]

The gibbs free energy of the reaction of diamond to graphite is equal to -2.90 kJ/mol. The free energy is negative which means that the reaction is spontaneous. Therefore, the forward reaction is favored. Hope this helps. Have a nice day.

7 0

3 years ago

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