The problems calculate the mass of 3.62 x 10^24 molescules of glucose (C6H12O6) and determine the number of molecules of ethanol (C2H5OH)
Not having a scientific calculator sucks ><
2007-03-12 11:54:57 · 3 answers · asked by User84 4 in Science & Mathematics ➔ Chemistry
You don't need a scientific calculator. First, if you go to google.com and type in any mathemtical equation into the search engine it will just give you the answer. Second, you can just ignore the 10 ^ 24 and bring it in later. Divide 3.62 by the molecular weight of ethanol (vaguely 46), you'll get something close to 0.1, and then you can put 0.1 x 10^24, or 1 x 10^23. Presumably the yahoo search engine can also do the math, but I don't know, I never use yahoo for searching anything.
Also, please only put in the significant digits in the answer. If you know you have 3.62g, you only have three significant digits. Even if a scientific calculator gives you 10 digits, only the first three are meaningful.
2007-03-12 11:58:28 · answer #1 · answered by Some Body 4 · 1⤊ 0⤋
first find the moles of glucose which is that you have to divide 3.62 x 10^24 by 6.23 x 10^23 , then multiple by the GFM of glucose which is 180 so it's 5.8105939 x 180 = 1045.906902
i think...
2007-03-12 12:42:13 · answer #2 · answered by tray 1 · 0⤊ 0⤋
Do a google search for a calculator. You will find several on-line ones to use. It will make life a lot easier for you.
2007-03-12 12:06:26 · answer #3 · answered by physandchemteach 7 · 0⤊ 0⤋