From the list of the instructions and tips below, select the statement that would not lead to a successful recrystallization a dry the crystals by pulling air through after vacuum filtration (to them dry). b keep the crystals open to the air for quite a while during the drying step. c precipitate the crystals as fast as possible. d rinse the crystals on the filter with a small amount of the ice-cold solvent. e use a very small amount of ice-cold solvent and a spatula to remove any crystals left in the flas

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

b) nuclear ive learned that in a pedtrodic table

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.