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How many atoms are in 149 g
of calcium?
149 g=

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(the answer is at the bottom of all this text.)

to calculate the number of atoms in 149 grams of calcium, w can use the following steps:

find the molar mass of calcium (Ca) from the periodic table. the molar mass of calcium is approximately 40.08 grams/mole.

calculate the number of moles of calcium in 149 grams using the formula:

moles = Mass (grams) / Molar Mass (grams/mole)

moles = 149 g / 40.08 g/mole ≈ 3.72 moles

use avogadro's number, which is approximately 6.022 x 10^23 atoms/mole, to find the number of atoms in the calculated moles.

number of atoms = Moles x Avogadro's Number

number of atoms = 3.72 moles x 6.022 x 10^23 atoms/mole ≈ 2.24 x 10^24 atoms

so, there are approximately 2.24 x 10^24 atoms in 149 grams of calcium.

User Celuk
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