5. How much thermal energy is needed to change 100 g of ice at -20 °C into steam at 110 °C? a) Draw a heating diagram for this change. [6T] [4C]
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Q: 7. How much thermal energy is needed to change 100 g of ice at -20 °C into steam at 110 °C? ™
A: mass of ice = 100 g initial temperature of ice = -20oC final temperature = 110o C , steam
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- 6 please help#13 Alternative Energy measures Noting that one Mole contains Avogadro's number (6.02 x 1023) of items, what is 1.00 kcal/mol (1.00 kilo-calories per mole) in Joules? It may be be useful to recall that 1 calorie is 4.18 Joules. O A. 3.12 × 10-22 J О В. 6.94 х 10-21 О С. 2.13 х 10-20 C. 1.60 x 10-19 J J J1.- In a laboratory experiment, a calorimeter is used to determine the specific heat of iron. 80 g of dry iron pellets are placed in the cup and heated to 95°C. The mass of the inner aluminum cup with a stirrer made of the same material is 60 g. The calorimeter is partially filled with 150 g of water at 18°C.The hot pellets quickly expired in the cup and the calorimeter was sealed, as shown in Figure 17.5. After the system has reached thermal equilibrium, the final temperature is 22°C. Calculate the specific heat of iron HEAT SPECIFIC Iron: 470 J/kgC: 0.113 cal/gCAluminum: 920 J/kgC: 0.22 cal/gC
- 1) Listen How much energy would have to be added to 519grams of water to heat it from 17.0°C to 84.0°C? O 3.53x105 J O 1.46x108 J O 6.95x104 J O7.39x105 J O7.39x108 J O 1.46x105 J15) If 600 calories of heat are added to 50 g of water initially at a temperature of 10° C, what is the final temperature of the water?