A calorimeter does not involve measurement of temperature. True or False? a) True b) False
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A calorimeter does not involve measurement of temperature. True or False?
a) True
b) False
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- QUESTION 25 The temperature at state A is 20°C, that is 293 K. What is the heat (Q) for process A to D, in MJ (MegaJoules)? (Hint: What is the change in thermal energy and work done by the gas for this process?) Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. p (atm) 5 4 3 2 1 O A D 1 1 2 3 4 B I 5 → V (m³)7. Under which of the following conditions would you expect real gases to approach ideal behavior? A) low temperature and low pressure B) high temperature and low pressure C) low temperature and high pressure D) high temperature and high pressure E) high temperature and high density 8. Complete the following statement: The first law of thermodynamics states that A) heat is a form of energy. B) entropy is a function of state. C) the entropy of the universe is increasing. D) the change in the internal energy of a system is given by Q-W. E) no engine can be more efficient than a Carnot engine operating between the same two temperatures.1
- I need help solving this problem please help A 6-inch personal pizza has 570 calories. A 14-inch pizza is cut into 8 slices. Estimate the number of calories in one slice of a 14-inch pizza. Round your answer to the nearest calorie.HelpA surveyor has a stainless steel measuring tape that is calibrated to be 100.000 m long (i.e., accurate to ±1 mm) at 20°C. She needs to add the correction factor to get the true distance. Submit Correct Part B How large, in mm, is the correction factor? Express your answer in millimeters to two significant figures. ► View Available Hint(s) Previous Answers AL = 11 Submit VΠ ΑΣΦ Provide Feedback Previous Answers ? X Incorrect; Try Again; 14 attempts remaining mm
- Specific Heat Worksheet q=(mass) (Csp)(AT) Units for specific heat = J g. °C 1. What is the specific heat of a substance that absorbs 2.5 x 10³ joules of heat when a sample of 1.0 x 10 g of the substance increases in temperature from 10.0°C to 70.0°C? 2. How many grams of water would require 2.20 x 104 joules of heat to raise its temperature from 34.0°C to 100.0°C? The specific heat of water is 4.18 J/g °C 3. If 200. grams of water is to be heated from 24.0°C to 100.0°C to make a cup of tea, how much heat must be added? The specific heat of water is 4.18 J/g °C 4. A block of aluminum weighing 140. g is cooled from 98.4°C to 62.2°C with the release of 1080 joules of heat. From this data, calculate the specific heat of aluminum 5. A cube of gold weighing 192.4g is heated from 30.0°C to some higher temperature, with the absorption of 226 joules of heat. The specific heat of gold is 0.030 J/g °C. What was the final CS Stemperature of the soldamScanner `64. 100.0 g of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4180J/kg°C, calculate the amount of heat energy needed to cause this rise in temperature. 5. A 0.3 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferredby heat to the copper is 66,300 J. If the specific heat of copper is 390 J/kg celcius, what is the change of thecopper's temperature?1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b) Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm (1.00 x 10 m) applied with a force of 3.00 N. Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is a needless use of non-SI units.]
- 1 please need help, keep in mind the 7 basic units and watch the sig figs. Please write in standard form need to see all the numbers in solution thank you so muchPeter's SUV has a fuel efficiency rating of 11.8 L /100 km. How much fuel would his SUV use on a 450 km trip? A) 43.1 Litres B) 53.1 Litres C) 33.1 Litres D) 63.1 Litres E) 23.1 LitresI need the answer as soon as possible