An airplane is flying west at 200 km/h two hours later it is flying west at 300 km/h it's average acceleration is 100 km / hour2 true or false

FALSE

Explanation:

To get the acceleration you would subtract the initial velocity from the end velocity so 300-200 would be 100, then you divide that by the time in this case 2 hours. This leaves you with the average acceleration as 50km/hr.

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.