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4vir4ik [10]
3 years ago
15

Number 3 please. I have no hope

Chemistry
1 answer:
kykrilka [37]3 years ago
7 0
Dang well get that app that you take a picture of then bam your answer good luck dude.
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Acetylene gas (c2h2) reacts with oxygen gas (o2) to produce carbon dioxide (co2) and water vapor (h2o). how many liters of c2h2
MissTica
According to the balanced equation of the reaction:

2C2H2 + 5O2 → 4CO2 + 2H2O

So we can mention all as liters,

A) as we see that 2 liters of C2H2 react with 5 liters of oxygen to produce 4 liters of CO4 and 2 liters of H2O 

So, when we have 75L of CO2

and when we have 2 L of C2H2 reacts and gives 4 L of CO2

 2C2H2 → 4CO2 

∴ The volume of C2H2 required is:

                    = 75L / 2

                    = 37.5 L

B) and, when we have 75 L of CO2


and 4CO2 → 2H2O 

∴ the volume of H2O required is: 
                               
                            = 75 L /2
                            = 37.5 L 


C) and from the balanced equation and by  the same way:

when 5 liters O2  reacts to give 4 liters of CO2

and we have 75 L of CO2:

5 O2 → 4 CO2 

   ??  ←  75 L

∴ the volume of O2 required is:

                              = 75 *(5/4)

                              = 93.75 L



D) about the using of the number of moles the answer is: 

no, there is no need to find the number of moles as we called everything in the balanced equation by liters and use it as a liter unit to get the volume, without the need to get the number of moles.
6 0
3 years ago
Read 2 more answers
Calculate the maximum amount of useful work that can be obtained and comment on the spontaneity for the reaction at 25C :
harkovskaia [24]

Answer:

1.41 *10^{3}  kJ/mol

Explanation:

First, we find in the tables the ΔH of formation of each compound. As you can see in the (image 1)

Then we solve the ecuation for ΔH°reaction

ΔH°reaction=∑ΔH°f(products)−∑ΔH°f(Reactants)

ΔH°reaction= (-2* 393.5 - 2*285.8) - (52.4 + 0) kJ/mol

ΔH°reaction = -1.41 *10^3  kJ/mol

3 0
3 years ago
What is silicons reactivity level
egoroff_w [7]

Answer:

this is your answer

Explanation:

Silicon, like carbon, is relatively inactive at ordinary temperatures; but when heated it reacts vigorously with the halogens (fluorine, chlorine, bromine, and iodine) to form halides and with certain metals to form silicides.

hope it helps

good day (≧▽≦)

5 0
2 years ago
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Hydrogen ions cannot exist alone but they exist after combining with water molecules true or false​
juin [17]
True because hydrogen ions combines with h2o to make hydronium ion, so in a sense h2o is acting like a base.
4 0
3 years ago
How long should the mpi be retained? permanently 25 years 50 years 10 years?
Aleksandr-060686 [28]
Master Patient Index will be kept by the hospital or medical institution permanently. It is also called Enterprise or enterprise-wide master patient index and it is a database that is used to healthcare organization to maintain its consistency, accurate information of the patients and essential medical documents or data of the patients managed within the departments. It is important to have an accurate identification of individuals that are in the Master Patient (person) Index or MPI in an organization. The MPI is also the registry of every patient in a healthcare it is used to identify, match, de-duplicate and cleanses the record of the individual. It is helpful to the healthcare organization to have this because they can find faster the data or information of the patients they searching.
7 0
3 years ago
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