When a 290-g piece of iron at 180ºc is placed in a 95-g aluminum calorimeter cup containing 250 g of glycerin at 10ºc, the final temperature is observed to be 38ºc. estimate the specific heat of glycerin. use si units, but do not include units in your answer.

idk what the question is about

може ли да зареждате повече информация, моля

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.