How many joules of energy are necessary to melt ice
A sample of H½O with a mass of 46.0 grams has a temperature of -58.0 àC. How many joules of energy are necessary to melt 46.0 grams of ice? (Use 2.1 J/gàC for the specific heat of ice, and 334.4 J/g for the heat of fusion of water.)
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what is the final temperature of A metal sample weighing 34.526 g was heated to 98.0 degrees Celcius then quickly transferred into a styrofoam cup calorimeter containing 74.365 g of distilled water at a temperature of 27.0 degrees celcius.
500.0 g of ammonia react with 51.0 moles of sulfuric acid to produce ammonium sulfate. How many moles of excess sulfuric acid are left over after the reaction is complete?
A sample of gas is collected over water at a temperature of 35.0C when the barometer pressure reading is 742.) torr. What is the partial pressure of oxygen?
Given that the vapor pressure above pure A at 85 degrees Celsius is 0.79 atm, what is the vapor pressure (in atm) of A above the mixture?
Copper metal has a specific heat of .385 J/g.degrees C. Calculate the amount of heat required to raise the temperature of 22.8g of Cu from 20.0 degrees C to 875 degrees C.
A student had 1.00 L of a 1.00 M acid solution. Much to the surprise of the student, it took 2.00 L of 1.00 M NaOH solution to react completely with the acid. Explain why it took twice as much NaOH to react with all the acid.
What is the final gas volume if 0.10 mol He(g) is added to the balloon and the temperature is then raised to 92.0 celsius while the pressure and amount of gas are held constant?
A bicycle tire is filled with air to a pressure of 100 psi at a temperature of 100 degrees C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees C. the volume of the tire is increased by 4%. what is the new
The pressure in the cylinder is 15.5Mpa and interneal volume is 46.9L. Find the moles of helium gas in the cylinder.
Gas cylinder a has a volume of 48.2L and contains N2(g) at 8.35 atm at 25 degrees C. Gas cylinder b, of unknown volume, contains He(g) at 9.50 atm and 25 degrees C.
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What can transformative learning do for adult learners that other pedagogy styles and instructional designs cannot do? Explain.
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What is something you learned today about child's protection that you didn't know before? How will you integrate this new learning into your future role as a So
How did Social Welfare begin in this country? Provide at least two examples to support your answer, include at least two subcultures within the U.S.
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Both the LOCADTR and the ASAM-PPC can be used to complete the level of care assessments. Which one might you prefer to use and why?
If the advertisement does not violate any laws, Daniel might think the testimony Ms Kunies makes is not honest. Ms Kunies posted on facebook