all of the above.
The properties of water are:
1) polar molecules
2) regulates temperature
3) universal solvent
4) high surface tension
5) can exist in all three stages of matter
Answer:
Explanation:
Mean of observation of A = 87.63
Mean of observation of B = 87.06
Mean of observation of C=87.76
So reading of B is closest to true volume hence his result is most accurate. Reading of C is least accurate.
As far as precision of measurement is concerned, it depends upon measuring instrument. From the reading it appears that the measuring instrument is the same because the no of significant figure of the reading is same ( three) . Hence their reading are equally precise.
First step is to calculate the mole of each element
that is;
carbon 97.6/12=8.13moles
hydrogen= 4.9/1=4.9 moles
oxygen 52/16=3.25 moles
nitrogen=45.5/14=3.25 moles
step two is to calculate the mole ratio by dividing with the smallest number of moles
that is divide each mole with 3.25moles
carbon=8.13/3.25 =5/2
hydrogen=4.9/3.25= 3/2
oxygen=3.25/3.25=1
nitrogen=3.25/3.25=1
step 3; multiply all the mole ratio by 2 to remove the fraction
carbon=5/2 x2 =5
hydrogen=3/2 x2=3
oxygen=1 x2=2
nitrogen =1x2=2
therefore the empirical formula is C5H3O2N2(answer c)
WHAT'S THE ACTUAL QUESTIIIOOON?!