Hellllppppp, having a hard time with chemistry question!!! its simple, I just dont know what to do?
A student placed 12.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added addit
A student placed 12.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the solution was uniform. A 60.0 mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
Express your answer to three significant figures and include the appropriate units.
or:A student placed 12.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the solution was uniform. A 60.0 mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?Express your answer to three significant figures and include the appropriate units.
or:1. Find the amount of glucose = 12.5/Mr of glucose. I got 0.0694mol. This is the same amount of glucose in 100ml in the flask.2. Find the amount of glucose in 60ml = 60/100 x 0.0694. I got 0.0416mol. This is the same amount of glucose in 500ml (0.500L) diluted solution.3. Hence in 100ml of 500ml diluted solution, there will be 100/500 x 0.0416 = 0.00832mol.4. Find the mass = amount of glucose x Mr of glucose. 0.00832 x 180 = 1.50g.Hoped I got the right answer tried my best to explain!And sorry if the terms and method I used are different we probably have different education systems.
or:12.5g dispersed in [something]. 60% of that = 7.5g and dispersed in [something]. 1/5 of 7.5g = 1.5g
