If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add
400 mL more water to it?
A. 0.03 molar
B. 0.13 molar
C. 0.23 molar
D. 0.33 molar

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j