Chemistry

Chemistry, 26.06.2019 20:40, brutusjohnson1

The atomic masses of elements x and y will always equal the exact atomic mass of z

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Chemistry, 25.07.2019 14:10, bernadetteindre6650

In dobereiner's classification system, the atomic mass of the middle element could be estimated by a. finding the difference between the atomic masses of the other two elements in a triad b. finding the product of the atomic masses of the other two elements in a triad c. averaging the atomic masses of the heaviest and lightest elements in a triad d. adding the atomic masses of the other two elements in a triad

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Mathematics, 01.09.2019 04:00, MacieKay8865

Igive 1. what is atomic mass? (points : 1) only the neutrons in the atomic nucleus only the protons in the atomic nucleus the sum of all protons and neutrons in the atomic nucleus the sum of all electrons in the atomic nucleus question 2. 2. which term describes elements with different atomic masses due to varying numbers of neutrons? (points : 1) atomic mass units isotopes atoms nuclei question 3. 3. if a carbon isotope has 6 protons and 7 neutrons, what is its atomic mass? (points : 1) 6 amu 7 amu 13 amu not enough information to calculate

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Chemistry, 23.09.2019 17:30, shakira11harvey6

After scientists discovered electrons and protons, what led them to believe there was a third subatomic particle? a. elements have molar masses that are numerically equal to their atomic mass. b. the mass of an atom's nucleus is greater than the combined masses of an atom's protons. c. the mass of an atom is greater than the combined masses of an atom's protons and electrons. d. elements have isotopes that have the same atomic number but different atomic mass numbers.

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