#1. drosophila melanogaster can have several eye colors. red eyes are dominant over white eyes and sepia eyes. If a red eyed fly that resulted from a mating of red eyed and sepia eyed parents is crossed with a sepia eyed fly, what percentage of the offspring will have sepia eyes? ==> Accroding to answer, genotype of sepia eyes is homozygous recessive, rr. then what is the genotype of white eyes? I thought white eye is rr, and sepia eye is Rr. #2. H=131KJ/mol S= 134J/mol K C(s) + H2O (l) --> CO (g) + H2 (g) at what temperature wil the reaction become spontaneous? a. 1250 C b. 1022 C c. 978 C d. 900 C e. 749 C ==> Be careful. the answer choice is giving you a unit of celcius, not K. I think the answer could be ALL, but the answer is E. why? #3. when 100g fo an unknown compound is dissolved in water to porduce 1L of solution, the pH of the resulting solution is measured as 4.56. which of the following statements is most likely true of the unknown compound? a. it is a weak acid with a pKa of more than 1. b. it si a weeak acid with a formula weight of less than 10g/mol ==> answer is A. I don't understand A. #4. increasing the amount of liquid in a sealed container wil cause the vapor pressure of the liquid to a. increase, if the liquid is sufficiently volatile. b. remain the same, regardless of the identity of the liquid.