IS 23.8 mmHg (Answ = 0.125 mm
vapour pressure of water at 50°C is 92.5 mmHg. At the same temperature, a solution
containing 9.14 g of urea in 15.0 g of water has a vopour pressure of 90.8 mmHg. Det
the molecular mass of urea (59.7 gmol'')​

uranium-238 i believe is your answer

i just learnt this recently but i need to look through my notes again

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

hi my dude or dudette