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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:
they have the same number of electrons in their outer energy level
Answer:
option C
Explanation:
Metallic bonds exist in the atoms of metals. mobile electrons exist in metallic bonds and are referred as electron sea.This is the property that makes metals to have a high electrical conductivity.
Electrovalent and ionic bonds are formed when a metal loses an electron to a nonmetal. covalent bonds exists when electrons are shared between molecules of same elements or of different elements.