Multiple Choice
Which of the following represents the correct scientific notation for the number 200?
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1. Intro to General Chemistry
Scientific Notation
Multiple Choice
What is (9 \(\times\) 10^{10}) - (4 \(\times\) 10^{10}) expressed in scientific notation?
A
4.5 \(\times\) 10^{10}
B
13 \(\times\) 10^{10}
C
5 \(\times\) 10^{10}
D
5 \(\times\) 10^{20}
Verified step by step guidance1
Identify the two numbers given in scientific notation: \(9 \times 10^{10}\) and \(4 \times 10^{10}\).
Since both numbers have the same power of 10, subtract their coefficients directly: \(9 - 4\).
Perform the subtraction of the coefficients: \(9 - 4 = 5\).
Keep the power of 10 the same because it is common to both terms: \$10^{10}$.
Combine the result to express the answer in scientific notation: \(5 \times 10^{10}\).
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