Which of the following is NOT a fossil fuel? * Crude Oil
Coal
Nuclear
Natural Gas

i really need help on this it is worth a lot so if you no please help ima give 30 points

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

An object's buoyant force and weight mean the same thing.a. trueb. false

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1