Calculate the solubility (in g/L) of O2 in water at a partial pressure of O2 of 120. torr at 25oC. (k(O2) = 780. atm*L/mol) (A.W.'s: H = 1.008 amu, O = 16.00 amu)   Answer: 6.48 x 10-3 g/L show steps on how to solve

Stuck on this, would appreciate help

Part A . If 15.4 g of Na2SO4 are added to 400. mL of water at 35oC, what will be the %(w/v) of this solution?  (M.M.:  Na2SO4 = 142.04 g/mol)     Answer- 3.85 % Na2SO4 Part B. Calculate the vapor pressure of the water solution above if the vapor pressure for pure water is 45.2 torr at 35oC.  (M.M.:  H2O = 18.016 g/mol) Answer 44.5 torr  Please show steps on how to solve part A and B :)

Question 7 (1 point) Which of the following would decrease the rate of solvation for solid NaCl in water? A stir bar is added to agitate (mix) the solution. The pressure is increased from 1 atm to 2 atm. The temperature decreases from 50OC to 200C O The NaCl is crushed into small pieces using a mortar and pestle.

At 100ºC the last water of hydration evaporates from MgNH4PO4 6H2O. MgNH4PO4 • 6H2O  ⟶  6 H2O(g)  +  MgNH4PO4  What is the %P of the anhydrous material?

How much KNO3 does a student need to make a SATURATED KNO3 aqueous solution in 500 g of H₂O at 50°C? a) At least 200 g b) At least 400 g c) At least 500 g d) At least 750 g Solubility (grams per 100 grams of water) 260 240 220 200 180 160 140 120 100 80 60 40 20 0 20 NACIO 40 KNO, KBr NaCl 60 60 100 Temperature (°C)

Coco Cola has a CO2 pressure of 3.40atm. If Henry's constant is 3.4E-2M/atm. How many grams of CO2 must be dissolved in a 16 ounce bottle?There are 33.814 ounces in a liter.