A hairdryer wastes 376J for every 1500J of electrical energy it uses. How efficient is the hairdryer? Pls answer :

real, smaller and upside-down.   so the answer should be b.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures