Multiple Choice
The four elements most common in organisms are
A) calcium, iron, hydrogen, and oxygen.
B) water, carbon, hydrogen, and oxygen.
C) carbon, oxygen, hydrogen, and nitrogen.
D) nitrogen, carbon, iron, and hydrogen.
E) phosphorus, water, carbon, and oxygen.
Correct Answer:
Verified
Correct Answer:
Verified
Q33: Given that Avagadro's number is 6.02 ×
Q35: The best reference source for the atomic
Q36: Ice floats because<br>A) the crystal takes up
Q37: The molecular weight of glucose (C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>) is
Q39: <sup>31</sup><sub>15</sub>P and <sup>32</sup><sub>15</sub>P have virtually identical chemical
Q40: Which of the following structures molecules is
Q41: A chemical reaction that can proceed in
Q42: The reactivity of an atom arises from
Q43: Which of the following statements about the
Q96: Oxygen forms _ covalent bond(s), carbon forms