Question
4. A chemistry student's investigation is described in the box below: 1. The student obtains 15.0 grams of an unknown substance. 2. The student notes that at room temperature the substance is a solid and its color is white. 3. The student determines that the density of the substance is 2.17g/cm^3 4. The student then determines that the substance is soluble in water. The student determines that the unknown substance is sodium chloride. Which of the following is an extensive property of sodium chloride? mass of 15.0 grams E white color E density of 2.17g/cm^3 E solubility in water E
Answer
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Answer
A. mass of 15.0 grams
Explanation
## Step 1The problem is asking us to identify the extensive property of sodium chloride from the given options. An extensive property is a property that depends on the amount of matter in a sample. Examples of extensive properties include mass, volume, and total charge. On the other hand, an intensive property is a property that does not depend on the amount of matter in a sample. Examples of intensive properties include temperature, density, and color.## Step 2In the given options, the mass of the substance (15.0 grams) is an extensive property because it depends on the amount of sodium chloride present. The color of the substance (white) and its solubility in water are intensive properties because they do not depend on the amount of sodium chloride present.## Step 3The density of the substance (2.17 g/cm^3) is also an intensive property because it is a characteristic of the substance that does not change with the amount of substance.## Step 4Therefore, the extensive property of sodium chloride in the given options is its mass.