<h2>Answer:</h2>
The correct answer is option B which is the melting points of sample Q and sample R are the same.
<h3>
Explanation:</h3>
- According to the question description, Plastic sample Q melted at 20 mins and sample R melted at 10 minutes while providing the heat double than sample Q.
- Melting point of a substance is the temperature on which the substance changes its phase from solid to liquid.
- This temperature is actually the amount of heat. The melting can be reached a point early by giving large amount of heat.
- Hence the melting points will be same, just time to reach that points will be different according to amount of heat given.
Answer:
B. absorb water and vitamins
Explanation:
The large intestine is used to absorb water and vitamins while the other forms of absorbtion occurs in the small intestine.
Answer: transfer of electrons
Explanation:
a low red blood count can cause feeling of fatigue and weakness.