The end point of a titration was reached after 22 ml of 0.050 m disodium edta titrant was dispensed into a solution containing the zinc ion. calculate the moles of disodium edta used

moles =molarity  x  volume in  liters

molarity=0.050m

volume  in  liters = 22/1000=0.022 L

moles  is  therefore=  0.022 x0.050  =1.1  x10^-3  moles  of  disodium  edta

Explanation:

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).