Multiple Choice
How many moles and how many atoms of zinc are in a sample weighing 34.9 g?
A) 0) 533 mol,8.85 ×10-25 atoms
B) 0) 533 mol,3.21 ×1023 atoms
C) 1) 87 mol,3.10 × 10-24 atoms
D) 1) 87 mol,1.13 × 1024 atoms
Correct Answer:
Verified
Correct Answer:
Verified
Q114: Which of the following decay processes give
Q121: What is the chemical formula for calcium
Q166: The number of nucleons in an atom
Q167: Which of the following statements about electron
Q189: The gas Freon-11,CCl<sub>3</sub>F,contains<br>A)C<sup>4+</sup>,Cl<sup>-</sup>,and F<sup>-</sup> ions.<br>B)C<sup>4+</sup>,Cl<sub>3</sub><sup>-</sup>,and F<sup>-</sup> ions.<br>C)C<sup>4+</sup>
Q199: What nuclide is formed when <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4939/.jpg"
Q200: Which of the following nuclides is most
Q203: Which are isotopes? An atom that has
Q208: Which of the following two atoms are
Q209: A proton is approximately<br>A)200 times larger than