We need to multiply the 2nd equation by two and reverse it.
Option D
<h3><u>Explanation:</u></h3>
In the 2nd reaction, it says H₂ +F₂ =2HF.
So, multiplying it by 2 gives 2H₂ + 2F₂ = 4HF.
Reversing it gives 4HF = 2H₂ +2F₂.
Now the 1st equation says 2H₂ +O2 =2H₂O.
Adding them gives
2H₂ +O₂ +4HF = 2H₂ +2F₂ +2H₂O.
Or, O₂ +4HF = 2H₂O + 2F₂.
this is the balanced reaction.
An isotope is an element with a different number of neutrons than protons. Neutrons have mass and therfore elements can have different masses while being the same element.
Answer:
The percentage yield of the reaction = 73.6 %
Explanation:
Step 1: Data given
Mass of salicylic acid = 1.75 grams
the maximum possible yield = 1.93 g
The actual yield = 1.42 grams
Step 2: The balanced equation
C7H6O3 + CH3OH → C8H8O3 + H2O
Step 3: Calculate the percentage yield
Percentage yield = (actual yield / theoretical yield) * 100 %
Percentage yield = (1.42 grams / 1.93 grams ) * 100 %
Percentage yield = 73.6 %
The percentage yield of the reaction = 73.6 %
<h3>
</h3>
From the calculations and the statement of the general gas equation, the volume of the gas becomes 28.8 L
<h3>
What are gas laws?</h3>
The gas laws are used to show the relationship between the variables in problems that has to do with gases.
In this case, we have to apply the general gas law as follows;
P1V1/T1 = P2V2/T2
P1V1T2 = P2V2T1
V2 = * 22L * 1.5 atm * 273K/313K * 1 atm
V2 = 28.8 L
Learn more about gas laws:brainly.com/question/12667831
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