if you had 120 grams of sugar and all of it decomposed,how many moles of water were decomposed?
Your question makes no sense. Perhaps you want to know how many moles H2O were formed. That would be 120/molar mass sugar = moles sugar.
moles H2O formed = 11 x moles sugar.
Its been a while since CHem but since this is homework help and not HW do lets start by asking you, what is the formula for sugar? And while your at that write in your own words what a mole is, so I know your level of comprehension and can go into that if desired.
-Thanks for visiting JISKHA your answers are just around the corner
To determine the number of moles of water decomposed from a given amount of sugar, we need to consider the chemical formula of sugar and the reaction that occurs during its decomposition.
Sugar, or sucrose, has the chemical formula C12H22O11. When it decomposes, it breaks down into glucose (C6H12O6) and fructose (C6H12O6). The decomposition equation for sugar is as follows:
C12H22O11 -> C6H12O6 + C6H12O6
We know the mass of sugar, which is 120 grams. To determine the number of moles, we need to use the molar mass of sugar, which is calculated by summing up the atomic masses of carbon (C), hydrogen (H), and oxygen (O) in one mole of sugar.
Molar mass of C = 12.01 g/mol
Molar mass of H = 1.008 g/mol
Molar mass of O = 16.00 g/mol
Molar mass of sugar (C12H22O11) = (12.01 * 12) + (1.008 * 22) + (16.00 * 11) = 342.34 g/mol
Now, we can use the molar mass to convert the mass of sugar to moles:
Moles of sugar = Mass of sugar (g) / Molar mass of sugar (g/mol)
= 120 g / 342.34 g/mol
≈ 0.3507 mol
From the equation above, we can see that one mole of sugar decomposes to produce one mole of water (H2O).
Therefore, the number of moles of water decomposed would be approximately 0.3507 mol.