contestada

Based on the chemical formula of glucose (C6H12O6), select all the true statements.
a. The mass percent of carbon and oxygen in glucose is the same.
b. In 1 molecule of glucose there are 6 atoms of carbon. T
c. he element with higher mass percent in glucose is hydrogen.
d. In 1 mol of glucose there are 6 mols of carbon.

Respuesta :

SpaceeQueenn
A is true
B is true 
C is true
D is false?
A)False:
B)True
C)False
D)True

A)The mass of a mol of glucose is 180g,
mass of C in one mol of glucose=6(12 g)=72 g
mass of H in one mol of glucose=12(1 g)=12 g
mass of O in one mol of glucose=6(16 g)=96 g

% mass of C=(72g/180 g)*100=40%
% mass of O=(96 g/180 g)*100=53.33%

Therefore the mass percent of carbon and owigen in glucose isn´t the same.

b)In 1 molecule of glucose there are 6 atoms of C.

c)
% mass of H=(12 g/180g)*100=6.67%
Therefore; the element with lower mass percent in glucose is hydrogen.

d)yes, in 1 mol of glucose there are 6 moles of carbon, if the formule was C7H12O6, the numbers of moles would be 7.

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