How many atoms are in 1.4 mol of phosphorus trifluoride (pf3)?
a. 8.4 × 1024
b. 3.4 × 1023
c. 8.4 × 1023
d. 3.4 × 1024

What is the mass of 4 molecules of co2

If an atom has 12 protons and 13 neutrons

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.