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1.   Two different rocks from near a recent volcanic eruption are compared. Sample A is a rock with a mass of 580 grams and a volume of 355 cm3, and sample B has a mass of 910 grams and a volume of 539 cm3. Which sample is denser and by how much? Round your answer to the nearest hundredth.

2.   Four cross sections of petrified wood are measured. Their average diameter is 16.3 cm. Three specimens' actual diameters are 17.7, 18.3, and 17.3 cm. What must the diameter of the other specimen be?

3.   A chemistry experiment requires a salt solution. You have just dissolved 2.6 g of NaCl (salt) in 155 g of water. What is the final concentration (in g/ml) of your salt solution? Round your answer to the nearest thousandth.

4.   Mr. Bloop dissolved 5.5 grams of sugar in 132 ml of water. What was the final concentration of sugar (in g/ml)? Round your answer to the nearest ten-thousandth.

5.   * This is a pre-made sheet.
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6.   A 10-kg ball of iron is put in a freezer at -47.7C for 48 hours. Then it is removed and put in an oven to undergo a mechanical test. Over the course of the test the temperature rises. At the end of the test, the temperature of the ball is 229.6C. What was the temperature change?


 


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