Number degrees C
2)The block in the drawing has dimensions L0×2L0×3L0,where L0 =0.3 m. The block has a thermal conductivity of 300 J/(s·m·C˚). In drawings A, B, and C, heat is conducted through the block in three different directions; in each case the temperature of the warmer surface is 36 ˚C and that of the cooler surface is 18 ˚C Determine the heat that flows in 4 s for each case.
(a) Q =
(b) Q =
(c) Q =
3)A cylindrical glass of water (H2O) has a radius of 5.73 cm and a height of 13.4 cm. The density of water is 1.00 g/cm3. How many moles of water are contained in the glass?
4)A 0.0466-m3 container is initially evacuated. Then, 7.75 g of water is placed in the container, and, after some time, all of the water evaporates. If the temperature of the water vapor is 432 K, what is its pressure?
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