F.
1)
50g ciocolata ......................... 100%
m g glucoza ............................. 80%
= 40g glucoza
M.C6H12O6 = 180 g/mol
1 mol glucoza ........ 180g ............... 2817 kJ
40g ................. x = 626 kJ
2)
gust dulce
stare de gregare solida
3)
a) H2N-CH2-COOH + KOH --> H2N-CH2-COOK + H2O
b) H2N-CH2-COOH + H2N-CH-COOH
CH3
--> H2N-CH2-CONH-CH-COOH + H2O
CH3
4)
amfion = ⁺H3N-CH2-COO⁻
anion = H2N-CH2-COO⁻
cation = ⁺H3N-CH2-COOH
5)
trestia de zahar
sfecla de zahar
