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Phenolphthalein is one of the most common indicators. What are its colors in acidic and in basic solutions?
the discharge pressure is 2 bars. Determine the area, enthalpy and specific volume at the entrance of the nozzle and the area, enthalpy
A stainless steel spoon weighs 25.2 g and is at a temperature of 18.5 oC. It is immersed in 81.7 mL of hot coffee (T = 84.0 oC) in a Thermos flask.
A mixture of 70 mole% propane and 30 mole% hydrogen is burned with 30% excess air.
A 4.78 L sample of H2O(g) reacts at a temperature of 375°C and a pressure of 692 mm Hg. How many grams of NH3 can be produced?
if 19.65mL of .145M nitric acid is required ti neutralize 50.0mL of barium hydroxide what is the molar concentration of the base? 2HNO3+Ba(OH)2-->Ba(NO3)2+2H2O
Suppose we are dealing with calcium chloride as opposed to the chemical in the video. If a solution contains 70 g of calcium chloride per 100 g of water at 25 degrees Celsius
A solution of NAOCH3 in methanol can be prepared by adding NaH to methanol (CH3OH). A flammable gas is produced as a byproduct. a) write the acid-base reaction that takes place
if you burn 33.7g of hydrogen and produce 301 g of water, how much oxygen reacted?
1.00 moles of sucrose (C12H22O11), and 1.20 moles of glucose. Sucrose and glucose are nonvolatile. What is the mole fraction of water in this solution?
Which electrode gains mass and which loses mass as the cell reaction proceeds? What is the equation for the equation for the overall cell reaction?
Calculate the molarity of a solution of glycerol made by dissolving 63.000 glycerol at 15 in enough water to make 300.00 of solution.
A compound contains 43.64% P with the remainder being oxygen. What is the empirical formula of the compound?
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