Multiple Choice
Which of the following is a quantitative observation?
1. Intro to General Chemistry
Scientific Notation
Multiple Choice
Which of the following is the correct way to represent 0.0035 kg in scientific notation?
A
35 imes 10^{-4} ext{ kg}
B
3.5 imes 10^{3} ext{ kg}
C
0.35 imes 10^{-2} ext{ kg}
D
3.5 imes 10^{-3} ext{ kg}
Verified step by step guidance1
Identify the given number: 0.0035 kg.
Recall that scientific notation expresses a number as \(a \times 10^{n}\), where \(1 \leq a < 10\) and \(n\) is an integer.
Move the decimal point in 0.0035 to the right until you get a number between 1 and 10. Here, moving the decimal 3 places to the right gives 3.5.
Since you moved the decimal 3 places to the right, multiply by \$10^{-3}$ to keep the value the same.
Write the number in scientific notation as \(3.5 \times 10^{-3}\) kg.
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