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CHEMISTRY: A MOLECULAR APPROACH CHAPTER 25 ACTUAL TEST PAPER QUESTIONS AND SOLUTIONS GRADED A+

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CHEMISTRY: A MOLECULAR APPROACH CHAPTER 25 ACTUAL TEST PAPER QUESTIONS AND SOLUTIONS GRADED A+

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CHEMISTRY: A MOLECULAR APPROACH
CHAPTER 25 ACTUAL TEST PAPER QUESTIONS
AND SOLUTIONS GRADED A+

◉ Convert 0.0000062 to scientific notation.
Answer: 6.2 × 10^-6


◉ Convert 4.12 × 10^5 to standard notation.
Answer: 412,000


◉ Convert 9.8 × 10^-4 to standard notation.
Answer: 0.00098


◉ Multiply 2.0×10^3 by 3.0×10^4.
Answer: 6.0×10^7


◉ Divide 8.0×10^6 by 2.0×10^2.
Answer: 4.0×10^4


◉ Convert 0.0450 to scientific notation.
Answer: 4.50×10^-2

, ◉ Convert 7,200 to scientific notation.
Answer: 7.2×10^3


◉ Add 3.0×10^3 + 2.0×10^3.
Answer: 5.0×10^3


◉ Subtract 9.0×10^5 − 4.0×10^5.
Answer: 5.0×10^5


◉ Convert 0.00000091 to scientific notation.
Answer: 9.1×10^-7


◉ Convert 1.25×10^-2 to standard notation.
Answer: 0.0125


◉ Convert 6.7×10^8 to standard notation.
Answer: 670,000,000


◉ Multiply 4×10^2 by 5×10^3.
Answer: 2×10^6

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