At 7 degrees celsius , the volume of a gas is 49 ml, at the same pressure, what is its temperature at 74ml

 P2 ) ( V2 ) / ( T2 ) = ( P1 ) ( V1 ) / ( T1 ) 

T2 = ( T1 ) ( P2 / P1 ) ( V2 / V1 ) 

T2 = ( 273.2 + 7.0 ) ( 1.000 ) ( 74 / 49 ) 

T2 = ( 280.2 ) ( 74 / 49 ) = 423.2 deg R = 150.0 dec C 

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -