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Chem Prep

For multiple world answers, leave a blank space!
Across
Sn
NO3
ClO4
Used to describe mass of one atom
Au
SO4
12.01 g of carbon is its _____
Down
Positively charged
Has differing numbers of neutrons
6.022 x 10^23
Negatively charged
Protons and neutrons are housed in the _____
Pb