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Scilla [17]
2 years ago
8

Which is the following is a vector quality?ans:1)mass2)speed3)time4)plane area​

Chemistry
1 answer:
Brut [27]2 years ago
4 0

Answer:

speed

Explanation:

hope it helps

keep smiling

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Consider the following data:
VikaD [51]

∆H ° rxn =-2855.56 kJ

<h3>Further explanation</h3>

Given

ΔHf CO₂ = -393.5 kJ/mol

ΔHf H₂O = -241.82 kJ/mol

ΔHf  C₂H₆ = - 84.68 kJ/mol

Reaction

2C2H6(g) + 7O2(g) -> 4CO2(g) + 6H2O(g)

Required

ΔHrxn=

Solution

<em>∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants) </em>

∆H ° rxn = (4.-393.5+6.-241.82)-(2.-84.68)

∆H ° rxn = (-1574-1450.92)-(-169.36)

∆H ° rxn =-3024.92+169.36

∆H ° rxn =-2855.56 kJ

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3 years ago
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Helium is an odorless, colorless gas at room temperature. It is less dense than air. That's why helium balloons float. It is a n
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Answer:

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3 years ago
How many moles of Ar atoms are there in 202 L of Ar gas at STP? A) 1.20 x 1024 mol B) 1.11 x 10-1 mol C) 4.52 x 103 mol D) 9.02
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Answer:

4.52 x 103 mol

Explanation:

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2 years ago
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Answer:

B. Volcanoes

Explanation:

B. Volcanoes

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