A chemical supply company sells circular disks of high-purity zinc. The disks have a diameter of 50. mm and a thickness of 0.10 mm. Note that a disk is a flat cylinder. Look up the formula for volume of a cylinder as well as the density of zinc. Use this information to calculate the mass, in grams, of a single zinc disk. Remember that all values should include a unit and a label, and all calculations should follow the rules of significant figures.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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A chemical supply company sells circular disks of high-purity zinc. The disks have a diameter of 50. mm and a thickness of 0.10 mm. Note that a disk is a flat cylinder. Look up the formula for volume of a cylinder as well as the density of zinc. Use this information to calculate the mass, in grams, of a single zinc disk. Remember that all values should include a unit and a label, and all calculations should follow the rules of significant figures.
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If you wished to compare your calculated answer above to a directly measured mass, would you need to use an analytical balance, or would a top-loading balance be sufficient? S
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