When hydrocarbons are burned in a limited amount of air, both CO and CO2 form. When 0.490 g of a particular hydrocarbon was burned in air, 0.509 g of CO, 0.798 g of CO2, and 0.490 g of H2O were formed. How many grams of O2 were used in the reaction?How many grams would have been required for complete combustion?

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

The answer is nitrogen-containing bases