Physics
Physics, 30.11.2019 05:31, rostecorralmart

Case 1: a styrofoam cup holds an unknown amount of lemonade (which is essentially water) at 20.5 °c. a 0.0550-kg ice cube at -10.2°c is placed in the lemonade. when thermal equilibrium is reached, all the ice has melted and the final temperature of the mixture is measured to be 11.8 °c. assume that the mass of the cup is so small that it absorbs a negligible amount of heat, and ignore any heat lost to the surroundings. the latent heat of fusion for water is 3.4 x10 j/kg. the specific heat capacity for water and lemonade is the same, 4186 j/(kg °c). the specific heat capacity for ice is 2000 j/(kg °c). the cold ice absorbs heat in 3 steps: step 1: cold ice warms up from -10.2 °c. to 0.0 °c. (remember: cold ice doesn't melt before reaching 0.0 °c.) apply q = mcat, to the cold ice. calculate the heat absorbed by the ice in this step. keep 2 decimal places. report all heat as positive. enter a number submit (5 attempts remaining) step 2: ice at 0.0 °c melts into water at 0.0 °c. calculate the heat absorbed by the ice in this step. keep 2 decimal places. report all heat as positive. enter a number submit (5 attempts remaining) step 3: the water at 0.0 °c from melted ice warms up to 11.8 °c. apply q = mcat, to the water. calculate the heat absorbed by water in this step. keep 2 decimal places. report all heat as positive. enter a number submit (5 attempts remaining) calculate the total heat absorbed by ice in the above 3 steps. enter a number j submit (5 attempts remaining) the warm lemonade releases heat in cooling down from 20.5 °c to 11.8 °c. apply q = mcat, to the lemonade. keep mass m as "space hoder. keep all heat as positive. let q released by lemonade = total heat absorbed by ice find the mass of the lemonade. keep 2 decimal places. enter a number kg submit (5 attempts remaining)

answer
Answers: 2

Other questions on the subject: Physics

image
Physics, 21.06.2019 19:30, trujillo03
What is hidden during a lunar eclipse? isn't the moon hidden?
Answers: 2
image
Physics, 22.06.2019 07:30, babygreg2001p97abr
Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?
Answers: 1
image
Physics, 22.06.2019 09:10, ehehvevsbg
The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island
Answers: 1
image
Physics, 22.06.2019 11:30, smilequi9653
Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.
Answers: 1
Do you know the correct answer?
Case 1: a styrofoam cup holds an unknown amount of lemonade (which is essentially water) at 20.5 °c...

Questions in other subjects: