Prepare a 1.5 L of a 0.50 M solution of calcium nitrate. Determine the amount of calcium nitrate needed in correct significant figures. es )
A)
779
B)
120 g
)
3069
D)
490 g

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

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