A chemical reaction occurs in 200 grams of water with an initial temperature of 16.0°C. The reaction is allowed to
proceed in a coffee cup calorimeter. As a result of the
reaction, the temperature of the water rises to 31.0°C. How
much heat energy was absorbed by the water (specific heat
= 4.184 J/g. °C)?
a.
12,552 )
b. 13,450 ]
C. 18,875 )
d. 56,500 )

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =