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pashok25 [27]
3 years ago
14

How do you create Magnesium Sulfide? Write the chemical formula as well​

Chemistry
1 answer:
zlopas [31]3 years ago
3 0

Answer:

Magnesium sulfide can be formed by a reaction between hydrogen sulfide and magnesium.

Formula: MgS

Explanation:

It can also be synthesized by combining sulfur with magnesium.

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Earth's atmosphere, which traps heat and radiation from the sun, helps to keep our temperature somewhat stable, even when we are
Elis [28]

Answer:

It is true

Explanation:

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3 years ago
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Calculate Ho298 for the process
Inga [223]

Explanation:

As per the Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

Hence, according to this law the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

Sb + \frac{3}{2}Cl_2 \rightarrow SbCl_{3}    \Delta H^0_1 =  -314 kJ  ..........(1)

SbCl_{3} + Cl_2 \rightarrow SbCl_{5}    \Delta H^0_2 = -80kJ   ..............(2)

The final reaction is as follows:  

Sb + \frac{5}{2}Cl_{2} \rightarrow SbCl_{5}  \Delta H^0_3 = ?  .............(3)

Therefore, adding (1) and (2) we get the final equation (3) and value of \Delta H^{0}_{3} at 298 K will be as follows.

             \Delta H^{0}_{3} = \Delta H^{0}_{1} + \Delta H^{0}_{2}    

                       = -314 kJ + (-80) kJ

                       = -394 kJ

Thus, we can conclude that H^{o} at 298 K for the given process is -394 kJ.

4 0
3 years ago
How many grams are in 1.946 moles of NaCl
Elden [556K]

113.8g

................

5 0
2 years ago
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Acetylene is the substance burned in oxy-acetylene torches. Write a balanced equation for the complete oxidation reaction that o
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Answer: 2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

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According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products must be same as the mass of reactants.

For the conservation of mass, the number of atoms of each element must be same in reactants and products. Thus we need to balance the reaction by writing appropriate stochiometric coefficients.

All the hydrocarbons burn in oxygen to form carbon dioxide and water.Thus the complete balanced equation is:

2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

4 0
2 years ago
What is a physical change that could not easily be reversed?
mylen [45]

Answer:

the answer is number 1

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because when you make toast you burn it you toast it and there is no way to undo that.

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