If a space probe sends back info on an object traveling through space at close to the speed of light astronomers will be working with speeds of:
a.) billions of meters per second
b.) trillions of meters per second
c.) millions of meters per second
d.) hundreds of meters per second.

10 points! will mark brainiest! in a heat engine if 1,000 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 initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

19. determine the final state and its temperature when 150.0 kj of heat are added to 50.0 g of water at 20 ºc. (specific heat of water = 4.184 j/g ºc; specific heat of steam = 1.99 j/g • ºc; ∆hfus (h2o) = 6.01 kj/mol; ∆hvap (h2o) = 40.79 kj/mol). (5 points)

Most fertilizers contain ammonia. ammonia (nh3) forms when hydrogen reacts with nitrogen. which balanced equation represents ammonia? 3h2 + n2 ? nh3 h2 + n2 ? 2nh3 h2 + n2 ? nh3 3h2 + n2 ? 2nh3