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1.
n = m / Mm
n = 5 / (2.1 + 16)
n = 5 / (2 + 16)
n = 5/18
n = 0,277 mol

2.
n = m / Mm
n = 49 / (19 + 35,5 + 3.16)
n = 49 / (19 + 35,5 + 48)
n = 49 / 102,5
n = 0,478 mol

3.
x = n x 6,02 x 10^23
x = 1,7 x 6,02 x 10^23
x = 10,234 x 10^23

4.
• mencari jumlah mol nya
n = m / Mm
n = 5 / (12 + 3.1 + 12 + 16 + 16 + 1)
n = 5 / (12 + 3 + 28 + 17)
n = 5/60
n = 1/12

• jumlah partikel
x = n x 6,02 x 10^23
x = 1/12 x 6,02 x 10^23
x = 0,501 x 10^23

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