Alarge sport utility vehicle has a mass of 2600 kg.
calculate the mass of co2 emitted into the atmosphere upon accelerating the suv from 0.0 mph to 66.0 mph. assume that the required energy comes from the combustion of octane with 30% efficiency.
c8h18(l) + 25/2 o2(g) → 8 co2(g) + 9 h2o(g) ∆hc = -5074.1 kj
hint: use ke = ½ mv2 to calculate the kinetic energy after acceleration.
mass of co2 = g

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form