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shutvik [7]
3 years ago
15

Two technicians are discussing refrigerant lines. Technician A says that line connections must be tight but not so tight that ai

r can't get through. Technician B says that all connection O-rings have to be replaced when retrofitting a system to R-134a. Who is correct?
Chemistry
2 answers:
lbvjy [14]3 years ago
4 0
B is right...............
..
lions [1.4K]3 years ago
4 0

Answer:

The correct answer is: technician B, all connection O-rings have to ve replaced when retrofitting a system to R-134a.

Explanation:

When we have a refrigerant line, the refrigerant is used through a refrigeration cycle. Refrigerant should pass in a physical process of transformation, it should be pure, avoid another kind of phenomena.

When we are retrofitting a system to R-134a, it is thus necessary to change all connection O-rings. In that way, we can prevent the refrigerant of crossed contamination with other refrigerants or substances.

Let's analyze the opposite situation, if we do not change the O-rings and we change the refrigerant, probably there will be a few previous substances, which can react, or create other phenomena when they undergo the refrigeration cycle with the R-134 a. We have to avoid this situation. 

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<u>Explanation:</u>

We are given:

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\text{Number of days}=\frac{\text{Total volume}}{\text{Volume of dose taken per night}}=\frac{300mL}{20mL}=15

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What is the pH of a solution that contains 25 grams of hydrochloric acid (hcl) dissolved in 1.5 liters of water?
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Calculate   the  number  of  each   reactant  and  the  moles  of  the  product
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3 years ago
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