Asubstance that has a definite shape and volume is a a solid b liquid c gas d fluid

Use the standard enthalpies of formation for the reactants and products to solve for the δhrxn for the following reaction. (the δhf of c2h4 is 52.26 kj/mol, co2 is -393.509 kj/mol, and h2o is -241.818 kj.) c2h4 (g) + 3o2(g) 2co2 (g) + 2h2o(g) δhrxn = the reaction is .

How do scientists think that gravity affected the formation of our solar system?

Draw the structure for 5-isopropyl-2-methyl-3-nonene