How much heat is required to raise the temperature of a 6.69-9 sample of iron (specific...
How much heat (in kJ) is required to raise the temperature of 141,4 g of ethanol (mw=46,07) from 49.82 °C to its boiling point of 78.37 °C and then vaporize it completely creating ethanol gas at the boiling temperature? (specific heat=2.46 J/gºC, ΔHvap = 48.6 kJ/mol)
1. How much heat is required to raise the temperature of 53 g of each of the following substances by 23 K? Substance A (C 8.37 J/g-K) Substance B 0.945 J/g-K) Substance C (C 0.0567 J/g-K) 5% 2. Determine the specific heat capacities (to 3 significant figures) of the mystery materials, assuming 200. g of a metal at 250.0°C is added to 200. g of waterát 20 C and given the final temperature of a. 37.89°C b.25.00°C с. 87.61°C 3....
CHAPTER 9 REVIEW QUESTIONS 1. How much heat is required to raise the temperature of a 0.04 kg stainless steel spoon from 20°C to 50°C if the specific heat of stainless steel is 0.50 kJ/kg-C? (A) 200 (B) 400 (C) 600 (D) 800) (E) 2000 5. An ideal gas is confined to a container whose volume is fixed. If the container holds n moles of gas, by what factor will the pressure increase if the absolute temperature is increased by...
CHAPTER 9 REVIEW QUESTIONS 1. How much heat is required to raise the temperature of a 0.04 kg stainless steel spoon from 20°C to 50°C if the specific heat of stainless steel is 0.50 kJ/kg-C? (A) 200 (B) 400 (C) 600 (D) 800) (E) 1000 5. An ideal gas is confined to a container whose volume is fixed. If the container holds n moles of gas, by what factor will the pressure increase if the absolute temperature is increased by...
C-1 How much heat is required to raise the temperature of 2000 g of water from 50°C to 80°C? The specific heat of water is 4.184 J/g °C a) 110.46 kJ b) 169.45 kJ C ) 251.04 kJ d) 301.25 kJ C-2 An exothermic reaction causes the surroundings to a) warm up b) become acidic c) condense d ) decrease in temperature C-3 Which of the reactions below have a positive entropy change? a) PC13(g) + Cl2(g) PCIs(8) b) NH3(g)...
Iron has a specific heat of 0.450 J/g C. How many kilojoules of heat is required to raise the temperature of a 100. g sample from 25.5°C to 40.0°C? - 3 pts
6. A sample of ammonium chloride dissolves in water, absorbing heat from the surrounding water and causing the temperature to drop by 20 °C. If the heat change for the reaction is +300 J, what is the heat change for the surrounding water? 12. The mixture of gas and air inside a cylinder reacts, releasing 400 kJ of total energy. If the system does 250 kJ of work on the piston, how much energy is released as HEAT?
How much heat is released when 150. g of iron cools from 525°C to 100°C? (Cp = 0.44 J/gºC) A 50.0 g block of glass (Cp = 0.50 J/gºC) absorbs 333 joules of heat energy. How much does the temperature of the glass rise? The temperature of a silver coin (Cp = 0.24 3/9°C) falls by 353 °C as it releases 5,550 Joules of heat. What is the mass of the coin 5.
How much heat is required to raise the temperature of 12.0 g of water from 15.4°C to 93.0°C? The specific heat of water is 4.184 J/g.-C. O 223 J O 773 J O 5033 O 467 x103 O 3.90 <103
CHAPTER 9 REVIEW QUESTIONS 1How much heat is required to raise the temperature of a 0.04 kg stainless steel spoon from 20°C to 50°C if the specific heat of stainless steel is 0.50 k/kg-C? 5. An ideal gas is confined to a container whose volume is fixed. If the container holds n moles of gas, by what factor will the pressure increase if the absolute temperature is increased by a factor of 27 (A) 200J (B) 400 J (C) 600...