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2 years ago

6

One mole of a substance has the same number of particles as one mole of any other substance, regardless of what substances are b

eing compared.

1 answer:

katen-ka-za [31]2 years ago

3 0

This is a true statement

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It about chemical change

Tom [10]

Answer:

Steps 3 and 4 :)

8 0

2 years ago

A mixture consists of sand and an aqueous salt solution. which procedure can be used to separate the sand, salt, and water from

Alex777 [14]

4. If you evaporate the water first, then the sand and salt will be nearly impossible to separate. That eliminates 1 and 2. You can't filter salt out from an aqueous solution, so that eliminates 3. 4 works because you can filter out the sand (which doesn't dissolve) then evaporate the water away from the salt.

7 0

2 years ago

For the reaction

sp2606 [1]

Answer:

$n_{H_2}^{equilibrium}=0.393mol$

Explanation:

Hello,

In this case, given the amounts of water and carbon dioxide we should invert the given reaction as hydrogen will be producted rather than consumed:

$H_2O(g) + CO(g)\rightleftharpoons H_2(g) + CO_2(g)$

Consequently, the equilibrium constant is also inverted:

$Kc'=\frac{1}{Kc}=\frac{1}{0.534} =1.87$

In such a way, we can now propose the law of mass action:

$Kc'=\frac{[H_2][CO_2]}{[H_2O][CO]}$

And we can express it in terms of the initial concentrations of the reactants and the change $x$ due to the reaction extent:

$Kc'=\frac{(x)(x)}{([H_2O]_0-x)([CO]_0-x)}=1.87$

Thus, we compute the initial concentration which are same, since equal amount of moles are given:

$[H_2O]_0=[CO]_0=\frac{0.680mol}{70.0L}=0.0097M$

Hence, solving for $x$ by using the quardratic equation or solver, we obtain:

$x_1=0.00561M\\x_2=0.0361M$

For which the correct value is 0.00561M since the other one will produce negative concentrations of water and carbon monoxide at equilibrium. Therefore, the number of moles of hydrogen at equilibrium for the same 70.0-L container turn out:

$n_{H_2}^{equilibrium}=0.00561mol/L*70.0L=0.393mol$

Best regards.

3 0

3 years ago

List 5 characteristics of an acid and 5 characteristics of a base

uranmaximum [27]

Answer:

acid is like sour taste

and bases increases the H for concentration of gas.

5 0

2 years ago

Drag and drop each organic compound's role in nutrition next to the its name.

Butoxors [25]

Answer:

Carbohydrates= energy that is made up of glucose

Explanation:

Protein= last one

liqid = insulate you

5 0

2 years ago