SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many moles are in 3.01 x 1022 atoms of magnesium?
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0.05 moles
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1.81 x 1046 moles
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5.00 x 1021 moles
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5.00 moles
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Explanation:
Detailed explanation-1: -in dividing scientific notation you have to subtract the exponent and divide only the coefficient.
Detailed explanation-2: -For example, let’s say we start out with 3.01 x 1023 atoms of silver. This time we need to divide by Avogadro’s number. 3.01 x 1023 atoms of silver divided by 6.02 x 1023 atoms of silver per mole of silver gives 0.500 moles of silver.
Detailed explanation-3: -Answer and Explanation: Hence, the number of moles are 5.
Detailed explanation-4: -0.04998339422 mole. it is the answer.
There is 1 question to complete.