8.461 x 1024 atoms of calcium is equal to moles of calcium.

8.461 x 10²⁴ atoms of calcium is equal to 14.1 moles of calcium.

CALCULATE MOLES FROM NUMBER OF ATOMS:

no. of moles = no. of atoms ÷ 6.02 × 10²³

no. of moles = 8.461 x 10²⁴ ÷ 6.02 × 10²³

no. of moles = 8.461/6.02 × 10²⁴-²³

no. of moles = 1.41 × 10¹

no. of moles = 14.1 moles.

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The answer to your question is: 3.82 moles of Calcium

Explanation:

Data

8.461 x 10²⁴ atoms Ca

                                   1 mol of Ca 6.023 x 10²³ atoms

                                   x                   8.461 x 10²⁴ atoms

                                  x = (8.461 x 10²⁴ x 1) / 6.023 x 10²³

                                 x = 3.82 moles of Calcium

since electrons are negative the answer is neagtaive

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.