1. Consider three 1-g samples of matter: (a) oxygen-16, (b) oxygen-17, and (c) c

Question

1. Consider three 1-g samples of matter: (a) oxygen-16, (b) oxygen-17, and (c) carbon-12. Rank them in terms of the number of atoms, from most to least.

2. Consider these atoms: (a) copper, Cu; (b) neon, Ne; (c) hydrogen, H. Rank them, from smallest to largest , in terms of size.

3. The isotope 12-carbon has a mass of 12.000amu, and the isotope 13-carbon has a mass of 13.003amu . Given that 98.93{ m \%} of all carbon atoms found in nature are 12-carbon and 1.07{ m \%} are 13-carbon, find the atomic mass of carbon, C(atomic number 6).

4. Which has more potential energy?an electron close to an atomic nucleus or one far from an atomic nucleus?

A. The potential energy of an electron that is close to an atomic nucleus is greater than the potential energy of an electron that is far from an atomic nucleus.

B. The potential energy of an electron that is far from an atomic nucleus is greater than the potential energy of an electron that is close to an atomic nucleus.

C. In both cases the potential energy of an electron is the same.

5. Does the periodic table explain the noble gas shell model, or does the noble gas shell model explain the periodic table?

A. The noble gas shell model is used to explain the organization of elements within the periodic table.

B. The periodic table is used to explain the concentric pattern of the noble gas shell model.

C. The periodic table and noble gas shell model are not related.

6. An electron confined to an atom has waves that are what?

A. Circular waves

B. Standing Waves

C. Traveling waves

Explanation / Answer

1. oxygen -17 , oxygen-16,carbondioxide-12

2.c,b,a

3. 12

4.B

5. A

6. B

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.