1. What volume of ethanol (D 0.789 g/mL) will have the same mass as 56.85 mL of
ID: 703704 • Letter: 1
Question
1. What volume of ethanol (D 0.789 g/mL) will have the same mass as 56.85 mL of aluminum (D -2.70 g/mL)? 2. A sample of copper has a mass of 100.0 g with a specific heat of 0.385 J/g oC. The sample is initially at 10.0 °C and heated up to 100.0 °C a. How much energy did the copper sample absorb? b. If a 100.0 g sample of aluminum also at 10.0 °C absorbs the same amount of energy as the copper sample in (a), what will the final temperature of the aluminum be? (specific heat of Al is 0.903 J/ goC). c. What can you say about the specific heat of a substance and the amount of energy the substance can absorb before the temperature increases based on what you did in parts (a) and (b)? 3. Mars is 33.9 million miles from the Earth. The Apollo 10 spacecraft traveled at speeds of 39,000 km/h. If we traveled using the Apollo spacecraft, how many days would it take to reach mars?Explanation / Answer
Ans 1
Mass of aluminum = volume x density
= 56.85 mL x 2.70 g/mL
= 153.495 g
Mass of ethanol = mass of aluminum = 153.495 g
Density of ethanol = 0.789 g/mL
Volume of ethanol = mass/density
= 153.495 g / 0.789 g/mL
= 194.54 mL
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