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mel-nik [20]
3 years ago
11

PLS HELP NO LINKS

Chemistry
1 answer:
Sindrei [870]3 years ago
7 0
Instead of driving, bicycle, walk, or run. If you must drive, combine errands into one trip.
Don’t “top-off” your gas tank and tighten the gas cap. Spillage adds two tons of air pollution daily.
Get the junk out of your trunk! An extra 100 pounds reduces gas mileage by up to 2%.
Avoid aggressive driving. Speeding, rapid acceleration, and hard braking can reduce gas mileage by 33% at highway speeds.
Slow down and save. Each 5 MPH that you drive over 60 MPH reduces fuel economy by up to 5%.
Turn it off! Idling your car or truck wastes gas and pollutes the air.
Install a programmable thermostat in your home – no lower than 78 in summer.
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sound travels slower in colder air than it does in warmer air why does the speed of sound depend on air temperature
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3 years ago
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3 years ago
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How many moles are in 43.9 L of oxygen
Ede4ka [16]

Answer: 2 mol

Explanation:

- According to the ideal gas law, One mole of an ideal gas at STP (standard temperature and normal pressure) occupies 22.4 liters.

- Using cross multiplication,

                               1 mol of (O2)        →       22.4 L

                                       ?                   →        43.9 L

Therefore, the number of moles of oxygen in 43.9 L = (43.9 × 1)/ 22.4 = 1.96 mol≈ 2 mol..


3 0
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