Please help! Will mark brainliest! I’m doing exams please hurry!

The graph below plots the temperature and luminosity of stars on the main
sequence.

Which of these stars had an initial mass greater than the initial mass of the sun?
Star 1 and Star 2
Star 1 and Star 4
Star 2 and Star 3
Star 3 and Star 4

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Select the correct answer. wax is a nonpolar substance. in which type of substance is it most soluble?

Give one example of a pure (exact) number and of an estimated (measured) number.