Question

explanation please

8) How many molecules are present in 4.25 mol of CC14? A) 9.26 x 1024 molecules (B)2.56 x 1024 molecules C) 653.69 molecules D) 153.81 molecules E) 3.69 x 10-23 molecules 9) How many molecules are there in 3.00 moles of NH3? A) 1.00 molecules B) 3.00 molecules C) 17.00 molecules D) 1.20 x 1024 molecules E1.81x 1024 molecules 10) How many molecules are present in 3.25 mol of C2H60? A) 3.25 molecules B) 46.0 molecules C) 1.85 x 1023 molecules D) 6.02 x 1023 molecules E 1.96x 1024 molecules 11) A thimble of water contains 4.0 x 1021molecules. The number of moles of H2O is 2.4 x 1045 (B)6.6 x 10-3. C) 6.6x 10-23. D) 2.4 x 1023 E) 2.4 x 10-23, 12) Calculate the number of moles of aspirin, C9Hg04, in 4.0 gram sample. A) 2.2x 10-4 moles B) 2.2 moles 94.6 x 10-3 moles DY0.022 moles E) 180 moles

Answer 1

be He Let habr Lev of malecales in 4as meles of 23 malecaler mele of cchy Conta ins 6-023 X lo 4.25 male of cay Contaies CYOSS mutiply 23 =4.25 x 6-023 x 10 24 molecules Nde: -23 Melece les 6.023 X10 Lontains (om poud of male any