A peeled cucumber is vacuum cooled. The amount of moisture removed was 2.3 g and the temperature change of the cucumber was 15oC. How much heat was removed from the cucumber?
A peeled cucumber is vacuum cooled. The amount of moisture removed was 2.3 g and the...
How much heat must be removed when 102 g of steam at 144°C is cooled and frozen into 102 g of ice at 0°C. (Take the specific heat of steam to be 2.01 kJ/kg·K.) I got 67 but its wrong.
How much moisture per pound of dry air is removed by air entering moist grain at 110 degrees F dry bulb temperature and exiting the grain at 90% RH and 68 degrees F wet bulb? Moisture Removed = ? lbs H2O/lb DA
A 41 g piece of aluminum at 19°C is cooled to -196°C by placing it in a large container of liquid nitrogen at that temperature. How much nitrogen is vaporized? (Assume that the specific heat of aluminum is constant and is equal to 0.90 kJ/kg·K and that the vaporized nitrogen's temperature does not change.)
A 44 g piece of aluminum at 20°C is cooled to -196°C by placing it in a large container of liquid nitrogen at that temperature. How much nitrogen is vaporized? (Assume that the specific heat of aluminum is constant and is equal to 0.90 kJ/kg·K and that the vaporized nitrogen's temperature does not change.) Answer is in grams
How many J of energy must be removed when 124.0 g of steam, at a temperature of 179.0°C, is cooled and frozen into 124.0 g of ice at 0°C? Take the specific heat of steam to be 2.1 kJ/(kg·K).
How much moisture per pound of dry air is removed by air entering moist grain at 110 degrees F dry bulb temperature and exiting the grain at 90% RH and 68 degrees F wet bulb? This question has been posted many times and all of them are incorrect!
4) If 46.2 g piece of aluminum is cooled from 84.5 °C to 29.5C, how much energy was lost by aluminum? (specific heat of aluminum is 0.901 J/(g.°C)) 5) If 78.6 g piece of iron is dropped into 100.0 g of water initially at 24.6 °C. The final temperature of both water and iron was measure at 28.5 °C. Calculate the initial temperature of iron? (Specific heat of water and iron from #1)
please help!!!! A 272.3 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C. (heat capacity of liquid = 1.62 J/g. °C; heat capacity of gas = 1.04 J/g. °C; AHvap = 78.11 kJ/mol; Tb = 160.3 °C) How much energy (in kJ) is absorbed/released to cool the gas? pple A 272.3 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C. (heat capacity...
1How much heat is needed to cause the following irreversible reaction? 200 g of liquid H2O at 50°C is heated to form 200 g of steam at 120°C 2 Calculate the amount of heat needed to increase the temperature of 300 grams of water at 15°C to 75°C. 3 How much heat must be added to 100 grams of ice at 0°C to form water at 0°C? 4 How much heat must be removed when 25 grams of steam at 100°C...
A 40-g block of ice is cooled to −77°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 23°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. (If not all the ice melts, determine how much ice is left.) Remember that the ice must first warm to 0°C, melt, and then continue warming as water. (The specific heat of ice is 0.500 cal/g · °C...