8) An experiment was conducted to find the half life of a certain isotope at 27°C. If the experiment was conducted at 130°C, would the half life of that isotope be greater than, equal to, or less than the value found at 27°C? Explain.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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

How is it possible for someone to put an ear to a wall and hear someone in the next room?     a.sound waves can travel though solids.    b.the waves travel from room to room via air.    c.there must be some air in the wall so the sound can travel through it.    d.sound waves change to electromagnetic waves and then back again.