After being thoroughly stirred at 10.°C, which mixture is heterogenous?(1) 25.0 g of KCl and 100. g of H2O

1 answer:

5 0

The answer is (2) KNO3. This depends on the solubility of these four compounds at 10℃. After checking the table, you can find that only KNO3 is less than 25.0 g.

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Let us differentiate accuracy from precision. Accuracy is the nearness of the measured value to the true or exact value. On the other hand, precision is the nearness of the measured values between each other. So, for precision, select the student in which the measured values are very near to each other. That would be Student III. Now, for accuracy, let's find the average for each student.

Student I: (8.72g+8.74g+8.70g)/3 = 8.72 g
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Following reactions are involved in present reaction
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