Suppose a piece of silver jewelry contains 7.74×1022 atoms of silver (Ag) How many moles of silver atoms are in the piece of jewelry?
回答 (3)
2017-07-18 1:43 am
1 mole of Ag contains 6.02 × 10²³ Ag atoms.
Number of Ag atoms present = (7.74 × 10²² atoms) / (6.02 × 10²³ atoms/mol) = 0.129 mol
Number of Ag atoms present = (7.74 × 10²² atoms) / (6.02 × 10²³ atoms/mol) = 0.129 mol
2017-07-18 1:42 am
use Avogadro's number as a conversion.
(7.74×10^22) X ( 1 mole / 6.022 x 10^23) ... use a calculator for the final answer
(7.74×10^22) X ( 1 mole / 6.022 x 10^23) ... use a calculator for the final answer
2017-07-18 1:31 am
Express your answer numerically in moles.
收錄日期: 2021-04-24 00:38:45
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