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shusha [124]
3 years ago
15

Given the equations below, what is the heat of reaction for the process in which carbon monoxide is formed from its elements?

Chemistry
2 answers:
murzikaleks [220]3 years ago
7 0
The answer is B, -110.5.
Alborosie3 years ago
3 0
The formation equation for carbon monoxide is:
C(s) + 1/2O2(g) --> CO(g).
We know that all of the elements and compounds are on the correct sides of the equations (C and O on left and CO on the right). The coefficients are also correct, so all we have to do is cancel out. The CO2's cancels out, and the O2's cancel out and leave a 1/2O2 on the top reaction. Finally, all we have to do is add up the heats of reactions for our final answer. As -393.5 + 283.0 = -110.5, our final answer is -110.5 kJ.

Hope this helps!
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How many of sodium (Na) are needed to make 4.5 liters of a 1.5mol/L of Na solution?​
Salsk061 [2.6K]

Answer:

Explanation:

First you will find the mole from the molarity and then the desired mass from the mole.

5 0
2 years ago
Consider sodium oxide, Na2O. Choose the best explanation for the subscript, 2, from the list provided. There are two atoms of ox
Shalnov [3]

There are two atoms of sodium and one atom of oxygen.

7 0
3 years ago
Read 2 more answers
The water cycle includes the circulation of all of the water on Earth. Which of these would be included in the water cycle? A. G
asambeis [7]

Answer:

D. All of these

Explanation:

The water cycle refers to how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation.

<em>Ice and glaciers are part of the water cycle, even though the water in them moves very slowly, they are considered as a form of storage but it stills evaporates into the atmosphere entering the cycle. This also applies to the ocean and surface water as they are in constant evaporation because of their exposition to the sun. </em>Therefore the correct answer is D.

I hope you find this information useful and interesting! Good luck!

6 0
3 years ago
What mass of potassium iodide is needed to prepare 5.60 L of a 1.13 M solution
MrMuchimi
Given that the question gives us concentration (M) and volume, we can use these so get moles. remember that Molarity (M)= mol/ Liters, so if we want the moles, then

moles= M x L

moles= 1.13 x 5.60= 6.33 moles KI

now to get the mass in grams, we need the molar mass of potassium iodide (KI) which can be determined using the periodic table and add the masses of each atom.

molar mass KI= 39.1 + 127= 166.1 g/mol

6.33 mol (166 g/ 1 mol)= 1050 grams KI


8 0
3 years ago
Would the calculated molar mass be higher, lower, or the same as the actual molar mass of the compound if the unknown contained
Delicious77 [7]

Answer:

higher

Explanation:

If it contains a impurity that is insoluble it won't dissolve completely, the solution would be smaller than it is supposed to be, when compared to a compound without such insoluble impurity. Molecular weight determination won't be accurate because the molecular weight obtained will be higher as a result of the fact that the mass of the solute would include the actual solute that is changing the temperature and the excess mass of the impurity.

3 0
2 years ago
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