The Ti-Ni binary system has the following phase diagram: a….

The Ti-Ni binary system has the following phase diagram: a. For a system with 70 wt% Ni at 900 ˚C, what phase(s) is/are present? b. What is/are the compositions of that/those phase(s)? c. What is the weight fraction of each phase present? d. For a project, you would like to cast a liquid Ti-Ni alloy that remains liquid at as low of a temperature as possible. What composition would you choose to work with? Note: Do not forget to take a photo of your scratch papers and send it to the email address given in the Instructions within 30 minutes after you submit your exam to be able to receive credit.     

The replacement electrons for the reaction center of photosy…

The replacement electrons for the reaction center of photosystem II come from    A) photosystem I                                                                                                                                                           B) H2O                                                                                                                                                                               C) glucose                                                                                                                                                                   D) O2                                                                                                                                                             E) NADPH