7. Proteins and carbohydrates consist primarily of carbon, hydrogen, and oxygen; these two molecules are types of and neutrons. 1. Each atom has a nucleus made up of р. 24. 2. In atoms, the number of protons is usually equal to the number of B. The atomic number of an atom is cqual to the number of compounds, p. 31. 8. On the pH scale, a pH of is neutral; a solution with a pH less than this is this is 9. Chemicals like bicarbonate that resist pH change are called р. 25. and a solution with a pH greater than p. 32. in the nucleus. p. 26. An alternative form of an atom is called an differs in the number of neutrons in the nucleus, p. 26. A bond formed between two atoms that share electrons is called it Р. 3. 10. When water molecules dissociate, they form ions. p. 32. and bond. p. 28. bonds form between oppositely charged atoms of a(n) polar covalent bonds of different molecules. pp. 29-30.

7. Proteins and carbohydrates consist primarily of carbon, hydrogen, and oxygen; these two molecules are types of and neutrons. 1. Each atom has a nucleus made up of р. 24. 2. In atoms, the number of protons is usually equal to the number of B. The atomic number of an atom is cqual to the number of compounds, p. 31. 8. On the pH scale, a pH of is neutral; a solution with a pH less than this is this is 9. Chemicals like bicarbonate that resist pH change are called р. 25. and a solution with a pH greater than p. 32. in the nucleus. p. 26. An alternative form of an atom is called an differs in the number of neutrons in the nucleus, p. 26. A bond formed between two atoms that share electrons is called it Р. 3. 10. When water molecules dissociate, they form ions. p. 32. and bond. p. 28. bonds form between oppositely charged atoms of a(n) polar covalent bonds of different molecules. pp. 29-30.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter1: The Nature Of Chemistry

Section1.13: The Periodic Table

Problem 1.9E

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2.92 A candy manufacturer makes chocolate-covered cherries. Although all of the products look roughly the same, 3% of them are missing the cherry. The mass of the candy with a cherry is 18.5 g; those missing the cherry weigh only 6.4 g. (a) How would you compute the average mass of a box of 100 of these chocolate covered cherries from this manufacturer? (b) I low is this question analogous to the determination of atomic weights?
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Click on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the Mix Isotopes tab, hide the Percent Composition and Average Atomic Mass boxes, and then select the element boron. Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts. Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice. Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on More and then move the sliders to the appropriate amounts. Reveal the Percent Composition and Average Atomic Mass boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction. Select Nature’s mix of isotopes and compare it to your prediction. How well does your prediction compare with the naturally occurring mixture? Explain. If necessary, adjust your amounts to make them match Nature’s amounts as closely as possible. 21. Repeat Exercise 2.20 using an element that has three naturally occurring isotopes.
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