Multiple Choice
Which one of the following is a pure substance?
A) tap water
B) rock
C) air
D) elemental oxygen
E) apple
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q17: Iron has a density of 7.9 g/cm<sup>3</sup>.What
Q18: If an object is accelerating at a
Q19: A small amount of salt dissolved in
Q20: Convert 1 cm<sup>3</sup> to Å<sup>3</sup>.<br>A)10<sup>24</sup><br>B)10<sup>-24</sup><br>C)10<sup>30</sup><br>D)10<sup>-30</sup><br>E)10<sup>-9</sup>
Q21: The correct answer (reported to the proper
Q23: Which of the following are chemical processes?<br>1.
Q24: The symbol for the element phosphorus is
Q25: Acceleration due to gravity of a free-falling
Q26: Of the following,only _ is an extensive
Q27: The temperature of 25 °C is _