Which of the following is the correct representation of 0.0004500 in terms of si

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Question: Which of the following is the correct representation of 0.0004500 in terms of significant figures?

Options:

Correct Answer: 4.500 x 10^-4

Solution:

In scientific notation, 0.0004500 is represented as 4.500 x 10^-4, which retains all significant figures (4, 5, 0, 0).

Which of the following is the correct representation of 0.0004500 in terms of significant figures?

Which of the following is the correct representation of 0.0004500 in terms of significant figures?

Step 1: Identify the number you want to convert, which is 0.0004500.
Step 2: Count the significant figures in the number. The significant figures are 4, 5, 0, and 0, which totals to 4 significant figures.
Step 3: To convert the number to scientific notation, move the decimal point to the right until you have a number between 1 and 10. For 0.0004500, move the decimal point 4 places to the right to get 4.500.
Step 4: Count how many places you moved the decimal point. Since you moved it 4 places, you will use -4 in the exponent.
Step 5: Write the number in scientific notation as 4.500 x 10^-4, which keeps all the significant figures.

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