1. C6H12O6 (glucose)
2. C7H12 (heptine)
3. NaHCO3 (Sodium BiCarbonate)
4. KNH4SO2
2007-02-07 16:01:45 · 3 answers · asked by m C 1 in Science & Mathematics ➔ Chemistry
Instead of giving you the answer, I'll tell you how to calculate it yourself ... Simply add up the atomic weights of all the atoms in the molecule: that number in grams is the molar mass of the substance in question.
2007-02-07 16:10:14 · answer #1 · answered by Clean Independent Energy 3 · 0⤊ 0⤋
I just learned how to do this today, look at a periodic table and the big number is the mass. So look at carbon (c), 12.011 is the mass. There is the carbons in C6H12O6 so 12*6=72 , Then hydrogen is 1.008 and there is 12 hydrogens, take 12*1=12. then 8 oxygens thats 15.999, round that to 16 (atleast we were told to round) 16*6=96.
72+12+96=180 , Very easy just basic math and looking at perodic table. When it doesnt have a subscribt (little number after the element) its only 1 of that element. Hope this helps
2007-02-08 00:55:47 · answer #2 · answered by User84 4 · 0⤊ 0⤋
1. 180
2. 96 (it's heptyne, not heptine)
3. 84
4. 121
2007-02-08 00:05:23 · answer #3 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋