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Korvikt [17]
4 years ago
8

If you pump air into cycle tyre a slight warming effect is noticed at valve stem why

Chemistry
1 answer:
Mashutka [201]4 years ago
6 0

As the air molecules move through the valve they have friction as they hit the walls, and its this friction that causes it to heat up.

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HELP ASAP!!!
Scorpion4ik [409]
<h3>Answer:  A) 3.5 mol/L</h3>

Explanation:

To determine the molarity, we have to find the number of moles in the volume given, and then extrapolate to find the number of moles that would be in 1 L.

<u>Determine the moles in the given volume</u>

moles of LiCl = mass ÷ molar mass

                       = 139.9 g ÷ 42.39 g/mol

                       = 3.30 mol

<u>Find the moles in 1 L</u>

    Since 930 mL of LiCl    =   3.30 mol

    then 1000 mL of LiCl    =   (3.30 mol × 1000 mL/L) ÷ 930 mL

                                           =  3.55 mol/L

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2 years ago
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Lesechka [4]
<h2>\huge\tt\red{ANSWER}</h2>

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3 years ago
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Minchanka [31]
I think it might be gram but im not sure
8 0
3 years ago
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Explain why iodine spontaneously sublimes in open air at 25.0 ∘<br> c.
Pani-rosa [81]
The characteristic of an Iodine which has a much higher vapour pressure could be held responsible of its spontaneous sublimation. Even though is has a greater intermolecular force (Van der Waals), it would still have the tendency to change the phase into a gaseous state when the pressure reaches 1 atm.
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<h2>Answer:</h2>

<u>The right choice is The combination of high winds and flood waters</u>

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Hurricanes cause much more destruction than tornadoes due to their size, duration and variety of ways to damage items while on the other hand tornadoes tend to be a mile or smaller in diameter, last for minutes and primarily cause damage from their extreme winds. Hurricanes also contain high winds and flood waters that is why they make more destruction

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3 years ago
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