Answer:
i dont think anybody is going to be able to do all of these lol
Explanation:
The volume of 4.92 grams of hydrogen gas at STP is 55 L.
<u>Explanation</u>:
1 mole of an ideal gas will occupy 22.4 L
To find volume, the molar volume of a gas is
22.4 L / 1 mole H
2 → this takes you from moles of H
2 to liters
Now, to find the number of moles present in 4.92 g of hydrogen gas, you can use the gas' molar mass
4.92 g 1 mole H
2 / 2.016
g = 2.44 moles H
2
This sample of hydrogen gas will thus occupy
2.44 moles H
2 22.4 L / 1 mole H
2 = 54.6 L = 55 L.
Answer:
The molar concentration of water in water is 55,5 moles/L
Explanation:
In chemistry, concentration refers to the amount of a substance per defined space. Molar concentration refers to moles of solute per liter of solution.
To obtain the molar concentration of water in water you need to know how many moles of water you have in a liter, thus:
1L ×× = <em>55,5 moles/L</em>
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I hope it helps!