Multiple Choice
Which of the following correctly expresses the average distance from Earth to the Moon (384,400,000 meters) in scientific notation?
64
views
1. Intro to General Chemistry
Scientific Notation
Multiple Choice
Which of the following is the correct scientific notation for 0.00063?
A
6.3 \(\times\) 10^{-3}
B
63 \(\times\) 10^{-5}
C
6.3 \(\times\) 10^{-4}
D
6.3 \(\times\) 10^{4}
Verified step by step guidance1
Identify the original number: 0.00063.
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 0.00063 to the right until you get a number between 1 and 10. Count how many places you move the decimal.
Since moving the decimal point 4 places to the right converts 0.00063 to 6.3, the exponent \(n\) will be negative 4 (because the original number is less than 1).
Write the number in scientific notation as \(6.3 \times 10^{-4}\).
Related Videos
Related Practice
