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DedPeter [7]
2 years ago
8

How many molecules are contained in 125 grams of water, H20?

Chemistry
2 answers:
sergejj [24]2 years ago
8 0
Answer:

18,01528

Explanation:
malfutka [58]2 years ago
5 0

Answer:18.015 g

Explanation:

Water has a molar mass of 18.015 g/mol . This means that one mole of water molecules has a mass of 18.015 g . So, to sum this up, 6.022⋅1023 molecules of water will amount to 1 mole of water, which in turn will have a mass of 18.015 g

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arsen [322]

Answer:

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Explanation:

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2 years ago
A sample of gas has a volume of 20.0 mL at STP. What will the volume be if the temperature is changed to 546 K and the pressure
Ostrovityanka [42]

The volume did not change, it remained at 20 ml

<h3>Further explanation</h3>

Given

20 ml a sample gas at STP(273 K, 1 atm)

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Required

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Solution

Combined gas Law :

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

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The volume does not change because the pressure and temperature are increased by the same ratio as the initial conditions (to 2x)

5 0
2 years ago
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Katarina [22]
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