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The weight of an object is determined by the force that gravitation exerts upon the object. The weight is equal to the mass of the object times the local acceleration of gravity. Thus, on the Earth, weight is determined by the force of attraction between the object and the Earth.
Explain the process of measurement and describe the three basic parts of a quantity. Describe the properties and units of length, mass, volume, density, temperature, and time. Recognize the common unit prefixes and use them to describe the magnitude of a measurement. Describe and calculate the density of a substance.
Many people have contributed to this volume. The people most directly responsible are acknowledged in the Historical Introduction. Many of the members of IUPAC I.1 have continued
weight is half of the molecular weight. Similarly, for bases an equivalent amount of a base is defined as the amount of base that neutralizes one mole of H + .
Weight is a measure of force that is equal to the gravitational pull on an object. Weight depends on location. Units can be multiplied and divided to generate new units for quantities like the liter for volume.
unambiguous terms. There are several ways of doing this. The simplest is to express the concentration as the weight or mass of the substance per unit volume: e.g. 10 g/l or 20 mg/ml or 2 µg/ml Another way is to express the concentration of a solution or mixture in terms of per cent (%).
Table of Contents. 2.1 Measurement Systems. 2.2 Metric System Units. 2.3 Exact and Inexact Numbers. 2.4 Uncertainty in Measurement and Significant Figures. 2.5 Significant Figures and Mathematical Operations. 2.6 Scientific Notation. 2.7 Conversion Factors. 2.8 Dimensional Analysis. 2.9 Density. 2.10 Temperature Scales. Scientific Method.
