The space shuttle orbiter utilize the oxidation of methylhydrazine by dinitrogen tetroxide for propulsion 4N2H3CH3(l) + 5NO4(l) -> 12H2O(g)+9N2(g)+4CO2(g) Calculate the difference H(f) for this reaction

Each pair of clay balls represents to planetesimals if each plane test molluscum pound of the same material and is separated by the same distance which pair experiences the greatest gravitational attraction

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

What does a numerical subscript following an element in a chemical formula mean?