Multiple Choice
Carbon dioxide is an example of
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
Correct Answer:
Verified
Correct Answer:
Verified
Q26: The chemical formula for calcium nitride is:<br>A)Ca(NO<sub>3</sub>)<sub>2</sub><br>B)Ca(NO<sub>2</sub>)<sub>2</sub><br>C)Ca<sub>3</sub>N<sub>2</sub><br>D)CaN<sub>2</sub>
Q42: The number of nucleons in a <img
Q45: 24.0 g of which element contains the
Q50: Assume that the mixture of substances in
Q57: The nuclear decay process that involves the
Q110: The thiosulfate ion is<br>A)HS<sup>-</sup>.<br>B)HSO<sub>4</sub><sup>2-</sup>.<br>C)SO<sub>5</sub><sup>2-</sup>.<br>D)S<sub>2</sub>O<sub>3</sub><sup>2-</sup>.
Q121: Gold is an example of:<br>A)a compound<br>B)an element<br>C)a
Q140: The formula for dinitrogen trioxide is<br>A)N(OH)<sub>3.</sub><br>B)(NO<sub>3</sub>)<sub>2.</sub><br>C)N<sub>2</sub>O<sub>3.</sub><br>D)N<sub>3</sub>O<sub>2.</sub>
Q194: Phosphate ion has the formula _.
Q262: Use the periodic table below to answer