Use the HR diagram below to answer the question. what can be concluded about the initial mass of a blue main sequence star compared to a red main sequence star?
A. Blue main sequence stars had a greater initial mass
B. Blue main sequence stars have the same initial mass has red main sequence stars
C. Red main sequence stars had a greater initial mass
D. initial mass comparisons cannot be made between blue and red main sequence stars

Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?