0.5 moles of sodium chloride is dissolved to make 0.05litres of solution. find the molar concentration

Which is a characteristic of mixtures?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

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.