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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 number of oxygen molecules are required to produce 0.22 g of CO2 according to the reaction?
zmey [24]
The number of moles for co2=mass(g)/molar mass
n=.22/44=.005 mole of CO2
from the equation we see the relationship between the moles of co2 and O2 and we find that they have the same number of moles
So we need .005mole of O2
Multiple the number of moles with avogadro’s number to know the number of O2molecules
.005x6.022 x10^23
3 0
3 years ago
Why the ph of glycine increases when 0.1 M NaOH is added dropwise​
shtirl [24]

Answer:

The acid-base reaction produces glycine reduction, and hence the increase of glycine pH.

Explanation:

The glycine is an amino acid with the following chemical formula:

NH₂CH₂COOH  

The COOH functional group is what gives the acid properties in the molecule.      

Hence, when NaOH is added to glycine an acid-base reaction takes place in which COOH reacts with the NaOH added:

NH₂CH₂COOH + OH⁻ ⇄ NH₂CH₂COO⁻ + H₂O

The glycine concentration starts to shift to its ion form (NH₂CH₂COO⁻) because of the reaction with NaOH, that is why the pH glycine increases when NaOH is added.  

Therefore, the acid-base reaction produces glycine reduction, and hence the increase of glycine pH.  

I hope it helps you!  

7 0
2 years ago
Draw the Lewis dot structure for benzene
gavmur [86]

Answer:

Explanation:

Benzene is an example for six membered aromatic hydrocarbons

8 0
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Ksju [112]

Answer:

polyatomic ion

Explanation:

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