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MASS, VOLUME, AND DENSITY MEASUREMENTS

MASS, VOLUME, AND DENSITY MEASUREMENTS INTRODUCTION Two of the most frequently made MEASUREMENTS in the chemical laboratory are the determination of mass and volume. Mass is generally measured by instruments called balances. Not all balances however are the same; some are capable of giving you more accurate answers than others. The least accurate one used here is the top-loading electronic decigram balance which can weigh an object to the nearest g. The centigram balance can weigh to the nearest g, and the most accurate one you will use is the top-loading precision electronic balance which is capable of weighing to the nearest 1 mg or g.

Knowing the mass and volume of an object allows the calculation of its density. Density is defined as the mass divided by the volume of the object. Mass should be expressed in units of grams and volume in units of mL or cm3. Note, from the …

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