Be sure to answer all parts. A sample of natural gas contains 7.424 moles of methane (CH4), 0.691 moles of ethane (C2H6), and 0.243 moles of propane (C3H8). If the total pressure of the gases is 3.78 atm, what are the partial pressures of the gases

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4: