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Simora [160]
3 years ago
11

A car uses !5 gallons of gas to go 330 miles. How much will the car need to go 450 miles?

Mathematics
1 answer:
jonny [76]3 years ago
3 0
This is how I do it. 330÷5=66. Now for every gallon we have 66 miles. Now divide 450 by 66 to see how many gallons we need. 450÷66=6.81818181818 which rounds to 6.8. The car will need 6.8 gallons of gas to go 450 miles
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A triangular course for a canoe race is marked with buoys. the first leg is 3/10 mi, the second leg is 1/2 mi, and the third leg
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3 0
3 years ago
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Calculate the amount of heat (in kJ) released when 3.5 mol CH4 react. 4() + 22() → 2() + 22() + 890
In-s [12.5K]

The amount of heat (in KJ) released when 3.5 moles of CH₄ react is 3115 KJ

<h3>Balanced equation</h3>

CH₄ + 2O₂ -> CO₂ + 2H₂O ΔH = 890 KJ

From the balanced equation above,

1 mole of CH₄ reacted to release 890 KJ of heat energy.

<h3>How to determine the heat energy released by 3.5 moles of CH₄</h3>

From the balanced equation above,

1 mole of CH₄ reacted to release 890 KJ of heat energy

Therefore,

3.5 moles of CH₄ will react ro release = 3.5 × 890 = 3115 KJ of heat energy

Thus, 3115 KJ of heat energy were released from the reaction

Learn more about enthalpy change:

brainly.com/question/11967318

#SPJ1

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