Objects moving withspeed in a circular path experience centripetal acceleration

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.