estimate the amount of CO2 (in kg ) that you emit each year by driving. estimates the amount of CO2 (in kg ) that you emit each year by breathing. Come up with another question that you can use stoichiometry to answer, and answer it.

Omg imgonnafailnfiedkla use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

What metric units would you use to measure the thickness of a key