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Ch.1 - Chemical Tools: Experimentation & Measurement
Chapter 1, Problem 88a

The Vehicle Assembly Building at the John F. Kennedy Space Center in Cape Canaveral, Florida, is the largest building in the world, with a volume of 3,666,500 m3 (a) Round off this quantity to four significant figures and then to two significant figures.

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insert step 1> Identify the number of significant figures in the given volume, which is 3,666,500 m^3.
insert step 2> To round off to four significant figures, start from the left and count four digits: 3,666,500.
insert step 3> Look at the digit immediately after the fourth significant figure to decide whether to round up or down.
insert step 4> To round off to two significant figures, start from the left and count two digits: 3,666,500.
insert step 5> Again, look at the digit immediately after the second significant figure to decide whether to round up or down.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Significant Figures

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. Understanding significant figures is crucial for accurately reporting measurements and calculations in scientific contexts.
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Rounding Rules

Rounding rules dictate how to adjust numbers to a specified level of precision. When rounding, if the digit to the right of the last significant figure is less than 5, the last significant figure remains unchanged. If it is 5 or greater, the last significant figure is increased by one. These rules ensure that numbers are expressed in a manageable form while retaining their significance.
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Volume Measurement

Volume is a measure of the three-dimensional space occupied by an object, typically expressed in cubic units such as cubic meters (m³). In the context of the question, understanding how to manipulate and express large volume measurements accurately is essential for scientific calculations, especially when rounding to significant figures.
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