What mass of water at 23.0°c must be allowed to come to thermal equilibrium with a 1.75-kg cube of aluminum initially at 150°c to lower the temperature of the aluminum to 68.0°c? assume any water turned to steam subsequently recondenses.

Explanation:

For thermal equilibrium we know that

Heat given by aluminium = Heat absorbed by water

For water

For aluminium

now by condition mentioned above we have

c

explanation:

i believe the answer is c and this is only worth 10 points you might wanna change it

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me