a 0.250 g sample of hydrocarbon undergoes complete combustion to produce 0.845 g of co2 and 0.173 g of h2o. what is the empirical formula of this compound?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

Which of the following words describe the reality that the universe looks the same from various perspective

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver