Answer:
0,5019 m
Explanation:
Expansividad lineal = aumento de longitud / longitud original × aumento de temperatura
Expansividad lineal = 19x 10-6 ° C-1
Aumento de temperatura = 50 ° C - 30 ° C-1 = 20 ° C
Longitud original = 0,5 m
Sustitución de valores;
aumento de longitud = 19 x 10-6 ° C-1 × 20 ° C × 0,5 m
Aumento de longitud = 0,0019 m
Nueva longitud = aumento de la longitud + longitud original
Nueva longitud = 0,5 m + 0,0019 m
Nueva longitud = 0,5019 m
Should be true
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Answer:
Most energy is used for life or released as heat before the organism is eaten.
Explanation:
Energy leaves Food very fast before anything can eat it.
Answer:
- Only the methyl ester of aspartame is sweet. True
- Amide bonds can be hydrolyzed under only acidic conditions. False
- The zwitterionic form of the amide bond is the most favored resonance form. True
- The phosphoric acid in soda hydrolyses the aspartame ester making it sweet. False
Explanation:
-
Aspartame is obtained by combining phenylalanine and aspartic acid. Its main impurity is dicetopiperazine, which does not possess sweetening properties.
- Amide bonds can be hydrolyzed both under basic and acidic conditions.
- The zwitterionic form of the amide bond is the most favored resonance form. A zwitterion is an electrically neutral chemical compound, but it has formal positive and negative charges on different atoms, presenting high stability
- Phosphoric acid creates an acidic medium that improves the absorption of carbon dioxide, reducing the pressure generated by carbon dioxide and thus allowing bottleneck. Phosphoric acid has a bitter taste that is offset by the addition of sugar
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