Which of the following is the balanced equation for the combustion of ethanol (C2H60) in pure oxygen?
a) CzH60+ O2 -> CzH603
b) 2C2H60 + 602 -> 7H20 + 4CO2
c) 4C2H60 + 602 -> 4H20 + 3CO2
d) CzH60 + O2 + H2O + CO2
e C2H60 + 302 - 3H20 + 2002

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.

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2