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##### maths-A diamond has a mass of 56.6 g and the gold ring it is set and other 8 questions with perfect answers

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Question;1. A diamond has a mass of 56.6 g and the gold ring it is;set in has a mass of 125.6 g. How many carbon atoms are there compared to gold;atoms?;2. On a warm summer day in California it can get as hot as;115oF, and on some cold winter days it can get as cold as -20oF. What are these;temperatures in Celsius?;3. An aluminum sphere is 5.50 cm in radius. What is its;volume expansion coefficient if it increases in volume 2.00 cm3 when heated;from 100 oC to 151 oC?;4. Carbon 12 is defined such that 12g is one mole. So if a;diamond is 37.5 g, how many moles of carbon are in it? How many molecules of;carbon are in it?;5. 400 L of water is at 4 oC. If it took a heat 600 seconds;to heat this up to 6 oC, what is the power rating of the heater?;6. A 95g cup of tea at 85 oC is poured into a 1.25 L large;tub of water at 30 oC. What is the equilibrium temperature?;7. 150 g of ice at -10.5 oC is raised to the melting point;and then raised to 76.0 oC. How much heat is added to the system?;8. A distant star is 7000 K and radiates 1.20 x1027 W. What;is the star?s radius? Assume? = 1.0.;9. Discuss how a grandfather clock (a pendulum clock);accurate at 20oC, will run fast or slow on a hot day (say, 30oC)? Knowing this;what other things in your home will run differently based on temperature?

Paper#61005 | Written in 18-Jul-2015

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