When octane is burned in a particular internal combustion engine, the yield of products (carbon dioxide and water) is 78%. What mass of carbon dioxide will be produced in this engine when 20 g of octane is burned with 44 g of oxygen gas

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Give the orbital configuration of the phosphorus (p) atom.