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Alina [70]
4 years ago
8

Which is a diatomic molecule? A. He B. O2 C. NaCl D. CuF2

Chemistry
2 answers:
Alex4 years ago
6 0

Answer:

O2

Explanation:

katrin2010 [14]4 years ago
4 0

O2 is the right answer                      

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Vigorous stirring significantly increases . . . A. the effective surface area for phase transfer B. the effective concentration
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5 0
3 years ago
How many grams of co2 are formed from the complete combustion of 635 grams of c3h8
8_murik_8 [283]

1909.16 g of CO₂

Explanation:

In the combustion reaction, the propane (C₃H₈) will react with oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O):

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number of moles = mass / molar weight

number of moles of C₃H₈ = 635 / 44 = 14.43 moles

Taking in account the chemical reaction we devise the following reasoning:

if          1 mole of C₃H₈ produces 3 moles of CO₂

then    14.43 moles of C₃H₈ produces X moles of CO₂

X = (14.43 × 3) / 1 = 43.29 moles of CO₂

mass =  number of moles × molar weight

mass of CO₂ = 43.29 × 44 = 1909.16 g

Learn more about:

combustion reaction

brainly.com/question/14112113

#learnwithBrainly

4 0
4 years ago
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