G A scientist measures the standard enthalpy change for the following reaction to be 560.3 kJ : 2BrF3(g) Br2(g) 3 F2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of BrF3(g) is kJ/mol. sample of solid platinum is heated with an electrical coil. If 31.9 Joules of energy are added to a 14.7 gram sample and the final temperature is 38.9oC, what is the initial temperature of the platinum

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

Select the correct answer from each drop-down menu. to make a table of the elements, dmitri mendeleev sorted the elements according to their . he then split the list of elements into several columns so that elements beside each other had similar .

This has nothing to do with school. i wrote a poem to my crush, who i'm asking out soon. tell me if it's cheesy, or cute. "roses are red, violets are blue no love story sounds right if it doesn't include you. dance with me all night, gaze into my eyes i'll hand you my heart, as well as my pride. when i hear your name, my heart goes insane. your all that i want, all that i need promise me you'll stay with me. here it is the final line, jasmine hill will you be mine? " i'm also going to buy her flowers, teddy bear and some food lol. written by me, bre (: