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

Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

Astudent uses universal ph paper to find the ph of three solutions . solution a has a ph of 5 solution b has a ph of 11 and solution c has a ph of 7 identify which solution is acidic which solution is neutral and which solution is basic