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1 point

Chlorine has atomic number 17 and nucleon number 35. It has

17 protons, 17 electrons, and 52 neutrons.

18 protons, 18 electrons, and 17 neutrons.

17 protons, 17 electrons, and 18 neutrons.

35 protons, 35 electrons, and 17 neutrons.

1 point

How many moles of atoms are in 50.15 g of mercury (atomic mass 200.59 amu)?

0.2500 mol

0.4000 mol

0.1001 mol

0.1504 mol

1 point

The mass of 2.0 mol of oxygen atoms (atomic mass 16.00 amu) is

16g

48g

32g

64g

1 point

The atomic number of neon is 10. The atomic number of calcium is 20. Compared with a mole of neon, a mole of calcium contains

an equal number of atoms.

20 times as many atoms.

twice as many atoms.

half as many atoms

1 point

Neon-22 contains 12 neutrons. It also contains

12 protons.

10 protons

22 protons

22 electrons

1 point

The number of atoms in a mole of any pure substance is called

Avogadro's constant.

its nucleon number.

its atomic number.

its gram-atomic number

1 point

Carbon-14 (atomic number 6), the radioactive nuclide used in dating fossils, has

10 neutrons

8 neutrons

14 neutrons

6 neutrons

1 point

Avogadro's number is

the number of protons and neutrons that can fit in the shells of the nucleus.

the number of particles in 1 mole of a pure substance.

the number of particles in exactly 1 gram of a pure substance.

the maximum number of electrons that all the energy levels can accommodate.

1 point

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its nucleon number is

10.

1 point

The mass of a sample containing 3.5 mol of silicon atoms (atomic mass 28.0855 amu) is approximately

28 g

72 g

98 g

35 g

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