I NEED HELP THIS IS DUE TMR! A 124.6-g sample of copper has a volume of 14 cm. what is the density of copper?

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas