A compressed-air tank carried by scuba divers has a vol- ume of 6.80 L and a pressure of 120 atm at 20 °C. What is
the volume of air in the tank at 0 °C and 1.00 atm pressure
(STP)?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

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.

Which of the following is true about the speed of light? it depends on the wavelength.