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- 1-86 The specific heats of some elements at 25oC are as follows: aluminum = 0.215 cal/g · oC; carbon (graphite) = 0.170 caI/g oC; iron = 0.107 cal/g mercury = 0.033 1 caI/g oC. (a) Which element would require the smallest amount of heat to raise the temperature of 100 g of the element by 10oC? (b) If the same amount of heat needed to raise the temperature of 1 g of aluminum by 25oC were applied to 1 g of mercury, by how many degrees would its temperature be raised? (c) If a certain amount of heat is used to raise the temperature of 1.6 g of iron by 10oC, the temperature of 1 g of which element would also be raised by 10oC, using the same amount of heat?Washington, D.C. has an average January temperature of 34.9 degrees Fahrenheit. What is this average if temp is expressed in Celsius? (Round to two decimal places.) [Hint: Conversion between Fahrenheit and Celsius is a linear transformation: Fahrenheit = Celsius*1.80 + 32, or Celsius = Fahrenheit*(1/1.80) - (32/1.80)]1. It is known that the boiling point of water on the Kelvin temperature scale is 373.15 K and the freezing temperature of water is 273.15 K. A temperature scale, called the Reaumur (R) scale, is defined by identifying the freezing point of water as 0.0°R and the boiling point of water as 80.0°R. What is 62.3°R on the Kelvin scale? Clearly define your variables.
- The temperature in a freezer is -22.74 Fahrenheit. What is the same temperature expressed in Kelvin? Use "K" (without the quotes) for the unit in your answer. Using any of the following formula - [degree C] = ([degree F] - 32) * (5/g) - [degree K] = [degree C] + 273A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. Note: your answer should be in the form of one or more fractions multiplied together. -7.5 × 105 J mmol. °C M = ? kJ mol. °C ☐x10 X μ 010Normal body temperature is 98.4°F. Use your Celsius temperature from the above question (81) to calculate this temperature in Kelvin. To determine the conversion factors (if you can’t remember them), use the following: Freezing point of water = 0 oC = 273.15 K. Boiling point of water = 100 oC = 373.15 K. Use the correct number of significant figures in your answers.
- A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl alcohol to be 74.1 ºC. Then, she looks in a reference book and finds that the actual boiling point of ethyl alcohol is 78.4 ºC. What is her percent error?Record only your final answer with the correct number of significant digits and the proper units.Convert 85 F to Kelvin to the nearest whole number. Hint: (°F +459.67) × or (°F +459.67) × 5 ÷ 9 5 9O MEASUREMENT AND MATTER Interconverting temperatures in Celsius and Kelvins An organic chemist measures the temperature T'of a solution in a reaction flask. Here is the result. T= 127.5 °C Convert T to Sl units. Round your answer to 1 decimal place. x10
- © Macmillan Learning Perform the calculation and report the answer using the proper number of significant figures. Make sure the answer is rounded correctly. 1.012 × 10-³ J = (0.016456 g) (298.3682 298.3567) K g. KMercury freezes at 238.98C. What is the coldest temperature, in degrees Fahrenheit, that can be measured using a mercury thermometer? The body temperature for a hypothermia victim is found to have dropped to 29.18C. What is this temperature in degrees Fahrenheit? Which is the higher temperature, 2108C or 108F? 4. Which is the higher temperature, 215°C or 48F? 5. The diagram below represents a thermometer that is inside an incubator. A student needs to incubate a bacterial culture at 43 degrees Celsius. According to the reading on the thermometer, how many degrees must the temperature in the incubator be increased in order to reach this temperature? (Diagram posted) 6. A student needs 22 milliliters of water for an experiment. How much additional water must the student add to the graduated cylinder shown below to reach 22 milliliters? (Picture posted)A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. Note: your answer should be in the form of one or more fractions multiplied together. (0.040- mmol. °C = ? kJ mol °C 0x10 ロ・ X μ 0|0 3
