Crystallization<span> is the (natural or artificial) process where a solid forms where the atoms or molecules are highly organized in a structure known as a </span>crystal<span>. Some of the ways which </span>crystals<span> form are through precipitating from a solution, melt or more rarely deposited directly from a gas.</span>
Answer:
mass is equal to density into volume
48.2=14.3*v
v=48.2/14.3
v=3.37
so volume is 3.40
0.04350179862
Explanation:
Make sure to check for sig figs though. Basically, you have 2.54 mL and you multiply that by the 0.789 g/mL and mL cancels out and you are left with 2.00406g. There are 46.06844 grams per mol of ethanol, so to cancel out grams we multiply by 1/46.06844. And then we are left with 0.04350179862 mol
Half-life refers to the time taken for half of the atoms in a radioactive substance to decay. Therefore in 1 half-life the 80 mg of substance will reduce to 40 mg. In another half-life it will reduce from 40 mg to 20 mg, then in a third half-life from 20 mg to 10 mg. Therefore the half-life is equal to the total time taken to decay from 80 mg to 10 mg divided by 3:
t(1/2) = 36 hours / 3 = 12 hours.
