Minerals with the silicon-oxygen structure shown in figure 2-1 are classified into what group? a. sulfates b. oxides c. carbonates d. silicates

What is the mass of 8 moles of sodium atoms

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

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