3fe+4h2o--> fe3o4+4h2 what is the mole ratioof fe3o4 to fe?

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

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

If two objects at different te,peraure are in contact with each other what happens to their temperature