To determine the number of 2.5-pound bottles of sodium nitrate should be ordered for the two-semester academic year in a college chemistry laboratory experiment that requires 15 grams of sodium nitrate for each student. If an introductory chemistry course runs 24 laboratory sections each semester, each with 20 students. Concept introduction: The measurement is a characteristic number to the object that can be compared with other object. The scope of the measurement depends upon the context and event. Measurement is commonly used as the international system of unit as a comparison framework. The system has 7 fundamental units’ like kilogram, meter, candela, ampere, kelvin and mole. The metric system is a decimal system of the measurement based on the units for the length, meter, the mass, the kilogram. It exists in several forms with various choices of the basic units. The metric system indicates a single basic unit for number of physical quantities. The units of other quantities are derived from the SI units. The significant figures are also known as the significant digits. It is the uncertainty associate with the measurement by rounding the results. Moreover the significant figures are defined in a number of the digits with certainty and the first uncertain digit.

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Chapter 3, Problem 29PE

Interpretation Introduction

Interpretation:

To determine the number of 2.5-pound bottles of sodium nitrate should be ordered for the two-semester academic year in a college chemistry laboratory experiment that requires 15 grams of sodium nitrate for each student. If an introductory chemistry course runs 24 laboratory sections each semester, each with 20 students.

Concept introduction:

The measurement is a characteristic number to the object that can be compared with other object. The scope of the measurement depends upon the context and event. Measurement is commonly used as the international system of unit as a comparison framework. The system has 7 fundamental units’ like kilogram, meter, candela, ampere, kelvin and mole. The metric system is a decimal system of the measurement based on the units for the length, meter, the mass, the kilogram. It exists in several forms with various choices of the basic units. The metric system indicates a single basic unit for number of physical quantities. The units of other quantities are derived from the SI units.

The significant figures are also known as the significant digits. It is the uncertainty associate with the measurement by rounding the results. Moreover the significant figures are defined in a number of the digits with certainty and the first uncertain digit.

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