now am stuck on how to find the grams of X+Y=1.10
X for glucose and Y for sucrose
i had 3.78=M0.08206*298
3.78/24.45=0.1546M
0.1546*0.025=0.003865 moles. now am stuck. help please
First mistake.
3.78 = M*0.08205*298
Solve for M.
Then M = moles/L
L = 0.025, not 24.45.
Then you solve two simultaneous equations which I set up earlier. It becomes a math problem then, and not a chemistry problem. I assume you know how to solve two equations simultaneously.
(X/180) + (Y/342) = moles
X + Y = 1.10 grams.
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Solve equation 2 for, say, X.
X = 1.10 - Y
Now substitute X (which is now 1.10-Y) into equation 1 and solve. The X will disappear, Y will be what you solve for, then substitute Y back into equation 2. You now have X and Y; ;i.e., grams glucose and grams sucrose. Then you can do percent from this.
To find the grams of X (glucose) and Y (sucrose) in the equation X + Y = 1.10, we need to use the information you have provided and some additional information. The molar mass of glucose (X) is 180.16 g/mol, and the molar mass of sucrose (Y) is 342.30 g/mol.
First, let's find the number of moles of X using the concentration you calculated (0.003865 moles):
Moles of X = concentration x volume
Moles of X = 0.003865 moles
Now, let's find the grams of X using the moles of X and the molar mass of glucose:
Grams of X = moles of X x molar mass of glucose
Grams of X = 0.003865 moles x 180.16 g/mol
Grams of X = 0.6988 grams
Next, let's find the moles of Y using the total number of moles (1.10 moles) and the moles of X:
Moles of Y = Total moles - Moles of X
Moles of Y = 1.10 moles - 0.003865 moles
Moles of Y = 1.096135 moles
Finally, let's find the grams of Y using the moles of Y and the molar mass of sucrose:
Grams of Y = Moles of Y x molar mass of sucrose
Grams of Y = 1.096135 moles x 342.30 g/mol
Grams of Y = 375.25 grams
Therefore, the grams of glucose (X) is approximately 0.6988 grams, and the grams of sucrose (Y) is approximately 375.25 grams.
To find the grams of X (glucose) and Y (sucrose) in the equation X + Y = 1.10, you need to use the molar ratios and molar masses of glucose and sucrose.
Let's break down the steps:
1. Start with the given information: 0.003865 moles. This represents the total moles of X + Y, which is 1.10.
So, X + Y = 0.003865 moles.
2. Find the molar ratio between glucose (X) and sucrose (Y). The equation tells us that for every 1 mole of glucose, there is 1 mole of sucrose. Therefore, the ratio is 1:1.
3. Divide the total moles (0.003865) by the sum of the ratio (1+1) to find the moles of each component (X and Y).
Moles of X = (0.003865 moles) / (1+1) = 0.0019325 moles
Moles of Y = (0.003865 moles) / (1+1) = 0.0019325 moles
4. Next, use the molar mass of glucose (X) and sucrose (Y) to convert moles to grams.
The molar mass of glucose (X) is 180.16 g/mol.
The molar mass of sucrose (Y) is 342.30 g/mol.
Grams of X = (Moles of X) * (Molar mass of X)
= 0.0019325 moles * 180.16 g/mol
≈ 0.3486 grams
Grams of Y = (Moles of Y) * (Molar mass of Y)
= 0.0019325 moles * 342.30 g/mol
≈ 0.6614 grams
Therefore, in the equation X + Y = 1.10, X (glucose) is approximately 0.3486 grams and Y (sucrose) is approximately 0.6614 grams.