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arsen [322]
3 years ago
10

24 grams C convert to moles

Chemistry
1 answer:
Anon25 [30]3 years ago
5 0

Answer:

Number of moles = 2 mol

Explanation:

Given data:

Mass of carbon = 24 g

Number of moles = ?

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of carbon is 12 g/mol.

Now we will put the values in formula.

Number of moles = 24 g/ 12 g/mol

Number of moles = 2 mol

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A chemical reaction with a negative enthalpy change and a negative entropy change ________. A) Must be nonspontaneous Is not pos
Deffense [45]

Answer:

Could be either spontaneous or nonspontaneous depending on the temperature

Explanation:

For a reaction to be spontaneous, Gibbs free energy must be negative.

The relation between enthalpy, entropy and temperature is as follows:

\Delta G=\Delta H-T\Delta S

ΔG is change Gibbs free energy, ΔH is change in enthalpy, ΔS is change in entropy and T is temperature.

In the given condition, ΔH is negative and ΔS is negative. As ΔS is also negative then ΔG cannot be negative at all temperature (Particulary at high temperature) and thus, reaction could be nonspontaneous.

Therefore, in the given the reaction, could be either spontaneous or nonspontaneous depending on the temperature.

4 0
4 years ago
1.) The following is a close view of particle movements. Which state of<br> matter are you viewing?"
m_a_m_a [10]

Answer: Gas

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8 0
3 years ago
One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal
Alenkasestr [34]

Answer:

Lithium oxide, Li₂O.  

Explanation:

Hello!  

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

M_2O+H_2\rightarrow 2M+H_2O  

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

 

Thus, we perform the operations in order to obtain:

\frac{10X}{(2X+16)}=2.32  

So we solve for x as shown below:

10X=2.32(2X+16)\\\\10X=4.64X+37.12\\\\X=\frac{37.12}{10-4.64}\\\\X= 6.93g/mol  

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.  

Best regards!

5 0
3 years ago
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