A beaker contains 2.06 mol of copper, and beaker b contains 222 grams of silver. which beaker contains the larger mass? which beaker has the longer number of atoms?

Question

Chemistry

Sheldon Mcclain

13 November, 10:24

A beaker contains 2.06 mol of copper, and beaker b contains 222 grams of silver. which beaker contains the larger mass? which beaker has the longer number of atoms?

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Answers (1)

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Jackson Houston · Answer 1

Part (a) : The masses

From the periodic table:

molar mass of copper = 63.5 grams

This means that:

mass of 2 ... 06 moles = 2.06 * 63.5 = 130.81 grams

comparing this mass with the 222 grams of silver, we will find that the mass of silver is greater.

Part (b) : The atoms:

number of moles = mass / molar mass

number of moles of silver = 222 / 107.8 = 2.059 moles

each mole contains Avogadro's number of atoms.

Since number of moles of copper is slightly larger than nuber of moles of silver, this means that the number of atoms in the copper sample would be more.