A sample of carbon-12 has a mass of 6.00 g. How
many atoms of carbon-12 are in the sample?
3.01 x 1023
6.02 x 1023
1.20 x 1024
3.60 x 1024
How many moles of carbon are in the sample?
0.500
1.00
6.00
12.0
DONE

Part A: 3.01 x 10²³ atoms C-12    Part B: 0.50mol C-12

Explanation:

Part A:

Given 6.00 g C-12 = 6g/12g/mol = 0.50mol C-12

0.50mole C-12 = 0.50mole C-12 x 6.023 x 10²³ atoms C-12/mole C-12

= 3.01 x 10²³ atoms C-12

Part B:

Given 6.00 g C-12 = 6g/12g/mol = 0.50mol C-12

yes

explanation:

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"the periodic table is arranged in order of atomic number."