49.

a 300 g sample of cas04 is reacted with a 300 g of naoh, a total of 250 g of na2s04 is produce what is the limiting reagent in this reaction how many moles of excess reagent are unreactive show work

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

When would a bouncy ball have the most potential energy

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line