A 10-lane Olympic sized swimming pool contains 2.5 x 106 kg of water. If the water is at 0ºC, how many kilojoules of energy must be removed to freeze the water in this pool? capital deltaHfus for H2O = 334 J/g

Explanation:

Given:

T = 0°C

Mass of water, M = 2.5 × 10^6 kg

Heat of fusion = 334 J/g

Heat required, Q = M × heat of fusion

= 2.5 × 10^6 kg × 1000 g/1 kg × 334 J/g × 1 kJ/1000 J

= 8.35 × 10^8 kJ.

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation: