A54-gram sample of an unknown material has a volume equal to 20 cm3. based on its density, could the sample be aluminum? explain

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Answer from each drop-down menu. e characteristics of a borane molecule (bh). the lewis structure and table of electronegativities are given olecular shape is and the molecule is reset next erved. search e a

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.