CHEM 1010 TUTORIAL SHEET 1 QUESTION 3,4 QND 6 SOLUTIONS

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QUESTIONS
3. Give the number of significant figures in each measurement.
(A) 36.7 m (B) 0.006606 s
4. Iron (Fe) is the main component of steel and, thus, the most important metal in industrial society; it is also essential in the body. How many Fe atoms are in 95.8 g of Fe?
6. In mammals, lactose (milk sugar) is metabolized to glucose (C6H12O6), the key nutrient for generating chemical potential energy. What is the mass percent of each element in glucose?

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