Asample of octane (c8h18) that has a mass of 0.750 g is burned in a bomb calorimeter. as a result, the temperature of the calorimeter increases from 21.0°c to 41.0°c. the specific heat of the calorimeter is 1.50 j/(g • °c), and its mass is 1.00 kg. how much heat is released during the combustion of this sample? use mc021-1.jpg. 22.5 kj 30.0 kj 31.5 kj 61.5 kj

Q = 30 kJ

Explanation:

As we know that the heat released due to combustion of the fuel is increasing the temperature of the calorimeter

So here the heat is used to increase the temperature which is given as

so we will have

now we have

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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