REMARKS aking a table ls optional, Hoee smple sostition errols are xemely common

Question

REMARKS aking a table ls optional, Hoee smple sostition errols are xemely common, an the table makes such errors less likely QUESTION Can a closed system containing different substances at different initial temperatures reach an equilibrium temperature that is lower than all the initial temperatures? (Select all that apply.) Yes, depending on which way heat flows from one object to another. Yes, depending on the relative masses, heat capacities, and initial temperatures No, energy transfer occurs from warmer objects to cooler objects to bring them all to the same temperature, which increases the energy and temperature of the coldest object. No, although some objects may be hotter than others in the final state. No, the objects all reach the same temperature somewhere between the highest and lowest initial temperatures. PRACTICE I Use the worked example above to help you solve this problem. At a party, 4.00 kg of ice at -5.50°C is added to a cooler holding 30 liters of water at 20.0°C. What is the temperature of the water when it comes to equilibrium? oc Enter a number EXERCISE HINTS: GETTING STARTED I I'M STUCK! What mass of ice at -10.7°C is needed to cool a whale's water tank, holding 1.19 x 103 m3 of water, from 20.0°C down to a more comfortable 10.0°c? kg Need Help? Talk to a Tutor Submit Answer Save Progress

Explanation / Answer

Let the temprature be T

So heat gained by the ice will be lost by the water.

So,

(4*5.5*2.108*1000)+(0.004*334)+(4*4.2*1000*(T-0))=30*4.2*1000(20-T)

46376+1.336+16800T=2520000-126000T

T=17.322C

Let the mass of ice needed be m kg.

SO,

(m*2.108*10*1000)+(.334*m)+(m*4.2*1000*10)=1190*4.2*(10)*1000

m=792.323kg

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