What do u notice about the molecules before and after the chemical reaction

Use the image below to answer the following questions there are three types of heat transfer occurring in the picture below. write a sentence about where each is occurring. (total three complete sentences in your own words.) on a very cold day, if you place your hand towards the bottom of a window, you can feel the convection of cold air as the cold, dense air sinks. try it out. did you feel the convection? it's a marshmallow on a metal stick over fire

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood

Which metals are called noble metals