3 years ago

What was the key design change for hfc-134a a/c systems versus CFC 12 a/c systems

1 answer:

6 0

Answer is: key design change for HFC-134a A/C systems versus CFC-12 A/C systems was quick couple service fitting and that design reduce venting and mixing of refrigerants during service.

<span> Level of contamination is also reduced and the emission of refrigerants and greenhouse gases (sulfur dioxide, carbon dioxide) is also reduced.</span>

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Iron oxide and hydrogen react to form iron and water in the following chemical equation:

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Answer:

The answer to your question is 245.9 g of Fe₂O₃

Explanation:

Data

grams of Fe₂O₃ = ?

grams of Fe = 172 g

Balanced chemical reaction

Fe₂O₃ + 3H₂ ⇒ 2Fe + 3H₂O

Process

1.- Calculate the molar mass of of Iron Oxide and Iron

Fe₂O₃ = (2 x 56) + (3 x 16) = 112 + 48 = 160 g

2Fe = 2 x 56 = 112 g

2.- Use proportions and cross multiplication to solve this problem

160 g of Fe₂O₃ --------------- 112 g of Fe

x ---------------- 172 g of Fe

x = (172 x 160)/112

x = 27520/112

x = 245.9 g of Fe₂O₃

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Which statement is true of the following reaction? H2 + O2 -> 2H+ O2-

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