Answer to Question #299079 in Chemistry for decky

Question

Calculate the mass of carbon in 10.00 g of glucose (C6H1206). Show the step by step process.

Answer 1

Solution:

1) Calculate the molar mass of glucose (C₆H₁₂0₆):

M(C₆H₁₂0₆) = 6×A_r(C) + 12×A_r(H) + 6×A_r(O)

M(C₆H₁₂0₆) = 6×12.011 + 12×1.008 + 6×15.999 = 180.156 (g/mol)

M(C₆H₁₂0₆) = 180.156 g/mol

2) Calculate the mass percent of carbon (C) in glucose (C₆H₁₂0₆):

Mass percent of C = [6×A_r(C) / M(C₆H₁₂0₆)] × 100%

Mass percent of C = (6×12.011 / 180.156) × 100% = 40.00%

3) Calculate the the mass of carbon (C) in glucose (C₆H₁₂0₆):

Mass of C = (Mass percent of C × Mass of glucose) / 100%

Mass of C = (40.00% × 10.00 g) / 100% = 4 g

Mass of C = 4 g

Answer: The mass of carbon (C) is 4 grams