Answer:
The given statement is FALSE
Explanation:
The protein digestion starts in the stomach. The stomach releases the proteases enzyme and hydrochloric acid, which are responsible for the protein digestion. The protein digestion then further continues in the small intestine. <u>In small intestine, proteins are degraded into small peptides and amino acids and then absorbed.</u>
The carbohydrate digestion starts in the mouth by mastication in the presence of the enzyme salivary amylase. Further, the digestion of carbohydrates predominantly occurs in small intestine with pancreatic amylase. <u>In small intestine, the carbohydrates are degraded into simple sugars, or monosaccharides and then absorbed.</u>
Therefore, the absorption of the carbohydrates and the proteins occurs in the small intestine.
True. imported produce has more chemicals to keep it ripe while transporting.
Answer:
14.8% of H2O2
Explanation:
Based on the redox reaction of H2O2/MnO4- is:
2MnO4- + 5H2O2 + 6H+ ⇄ 2Mn2+ + 5O2 + 8H2O
<em>2 moles of KMnO4 react with 5 moles of H2O2</em>
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To solve this question we need to find the moles of KMnO4 until reach the endpoint. Using the balanced reaction, we can find the moles of H2O2 that must be converted to grams using its molar mass -Molar mass H2O2: 34.015g/mol-:
<em>Moles KMnO4:</em>
0.0297L * (1.4686eq/L) = 0.04362eq MnO4- * (1mol / 5eq) = 0.008723 moles MnO4-
<em>Moles H2O2:</em>
0.008723 moles MnO4- * (5mol H2O2 / 2mol MnO4-) = 0.02181 moles H2O2
<em>Mass H2O2:</em>
0.02181 moles H2O2 * (34.015g/mol) = 0.7418g H2O2
<em>%:</em>
0.7418g H2O2 / 5.0mL * 100
<h3>14.8% of H2O2</h3>
