How many electrons are being shared between the two carbon atoms in the compound ethyne? ethyne has the lewis structure: h−c≡c−h

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves

State one important difference between a physical change and a chemical change?