Nwhich list below are the 0.1 m aqueous solutions of the salts listed from left to right according to decreasing ph? (a) fecl3, kcl, fecl2, mgcl2 (b) mgcl2, kcl, fecl3, fecl2 (c) fecl2, mgcl2, kcl, fecl3 (d) kcl, mgcl2, fecl2, fecl3

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?