There are 1.806x10^25 molecules of water (h20). how many moles of water does the sample contain?
a: 30.0 moles
b: 90.0 moles
c: 1.08 x 10^48 moles
d: 6.02 x 10^24 moles

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?