Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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a) Which of the following is the lowest temperature?
a) 42 C
b) 318 K
c) 57 F
d) all these temperatures are equal
b) A sample of 5 kg pure lithium nitrate contains 10.1% lithium by mass. What is the % lithium by mass in another sample of 10kg pure lithium nitrate?
The highest temperature ever recorded in Phoenix, AZ was 122F. Express this temperature in C.
Henrietta has a sample of a pure substance in a beaker. She heats the substance to a temperature of 100°C. What will determine if the substance is a solid, liquid, or g
as at 100°C?
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- A student measured the temperature of boiling water to be 105.25 C. the correct temperature for boiling water is 100 C at 1 atm. What went wrong with the experimentarrow_forwardA 50.0 g sample of tungsten (c= 0.134 J/g degrees C) loses 5,687 J of energy and ends up with a temperature of 145.0 degrees C. What is the initial temperature?arrow_forward1.Neon, a gaseous element used in neon signs, has a melting point of -248.6 °C and a boiling point of of -2461.1 °C. Express this temperature in kelvin. 2.A 2-in piece of chocolate cake with frosting provides 1670kJ of energy. What is this in dietary Calories?arrow_forward
- the temperature at 6:00 am was - 1.8°F the temperature change over the next 12 hours was 35.7°F the temperature Change the next 12 hours was -34.9°F what was the temperature 24 hours after 6:00 amarrow_forwardA strip of aluminium weighing 0.789 g is heated from 26.1 0(C to 45.8 0(C. What is the qarrow_forwardA+BC<>AB+C What will most likely be in thecontainer after several minutes havepassed ?A. Container will have only AB & CB. Container will have only A & BCC. Container will have a mixture of allarrow_forward
- A hot metal block is plunged into water in a well-insulated container. The temperature of the metal block goes down, and the temperature of the water goes up until their temperatures are the same. A total of 1500 J of energy' is lost by the metal object. By how much did the energy of the water increase? What law of science is illustrated by this problem?arrow_forwardA Different civilization on a distant planet has developed a new temperature scale based on ethyl alcohol. The freezing point of ethyl alcohol (117C) is designated as 0J, and its boiling point (78C) is designated as 100J. Assuming that the relationship between C and J is linear, (a) draw a graph of the line using the data above. (b) what is the slope of the line? (c) what is the y-intercept of the line? (d) Write an equation to convert J to C.arrow_forward1.37 Express each of the following temperatures in Kelvins. (a) -10.°C, (b) 0.00 °C, (c) 280 °C, (d) 1.4103 °Carrow_forward
- A car has a fuel efficiency of 27 miles per gallon. What is its efficiency in kilometers per gallon?arrow_forwardThe number 1,000,000 is what power of 10? a. 106 b. 106 c. 16 d. 0.000001arrow_forwardThe highest recorded climatic temperature is 329 K in Death Valley, California. Express the temperature in °F.arrow_forward
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