Harry has a sample of an unknown material. The sample has a mass of 81 grams and a volume of 0.9 cubic centimeters. What is the
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Explanation:
The pH of the solution is 9.63 ± 0.03.
we know that
pH= -log[H+]
⇒[H+] =
= =
Now to find absolute error we use the formula
Absolute error/[H+] =ln10(uncertainity)
Absolute error = ln10×[H+] ×0.03
=
1 mole of glucose : 6 moles of oxygen
First calculate the number of moles of oxygen in 10 g:
1 mole of glucose reacts with 6 moles of oxygen
x moles of glucose reacts with 0.3125 moles of oxygen
Now calculate the mass of 5/96 moles of glucose.
The maximum mass of glucose that can be burned in 10 g of oxygen is 9.375 g.