What is the iupac name of the following compound?
b. 4-ethyl-8-methyl-non-4-ene
c. 6-ethyl-2-methyl-non-5-ene
d. 7-methyl-3-propyl-oct-3-ene

What is the mass of phosphorous in a 51-kg person

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two