At 100°C, 170 g of potassium nitrate and 30 g of sodium chloride were added to 100 mL of water. If the solution is kept at 100°C until only 50 mL of water remains, then what mass of each solid precipitates?

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?