How much heat is needed to raise the temperature of 5g of water by 19oc?

The water's specific heat is C=4.184 J g^-1 C^-1.

The water's specific heat tells you that you need 4.184 J of energy in the form of heat in order to increase the temperature of 1 g of water by 1∘C .

ΔT , is the change in temperature, will be equal to

ΔT=Tfinal−Tinitial We know that ΔT=19∘CTo increase the temperature of 5 g of water by 1∘C , you'd need 5*4.184/1=20,92 20,92*4.184 =87,529 J88 KJ heat is needed to raise the tempertaure of 5g of water by 19.

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 -