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Nitrous acid, HNO2, is a weak acid that is partially dissociated (broken apart) in aqueuous solution. What is the equilibrium concentration of HNO2 if the extent of dissociation in 2.00M HNO2 is 0.58%? The equilibrium equation is shown below.
HNO2 (aq) ↔ H+ (aq) + NO2-(aq)
The molar mass for NaCl and water are 58.443 g/mol and 18.015 g/mol, respectively. Calculate the partial molar volumes for NaCl and water in a 0.35m solution
a baseball is seen to pass upward by a window 22m above the street with the vertical speed 13ms. if the ball was thrown
Identify which gas is in excess and by how much and calculate the volume of nitrogen produced.
It required 16ml of a sodium hydroxide solution titrated against a standard solution of 0.79g of potassium hydrogen phthalate in water to reach equivalence point. What is the molarity of the sodium hydroxide?
A student heated a 4.901 g sample of hydrated iron chloride. After heating, the anhydrous iron chloride has a mass of 3.010 g. Calculate the percentage by mass of water in the hydrated compound.
As food manufacturers add vinegar to food preparations to make them tart, rather than pure acetic acid,
a 251 mL sample of oxygen is collected over water at 25 deg C and 760 torr pressure. If the vapor pressure of water as 25 deg C is 23.8 torr, what is the pressure of the dry gas alone?
Calculate q, and determine whether heat is absorbed or released when a system does work on the surroundings equal to 64 J and ?U = ?213 J.
If equal amounts of I2 and cyclopentene are mixed at 1 bar and 500k, what will be the equilibrium partial pressure of I2. Kp=7.76x 10^-3
4 HNO3(aq) + Cu(s) => Cu(NO3)2(aq) + 2 H2O(l) + 2 NO2(g) Considering which elements are being oxidized and reduced, determine
A girl is celebrating her seventh birthday. Each guest is served one large slice of chocolate cake, a hamburger, French fries, and some oranges. Identify the food groups mentioned above.
Most compounds that contain N-H bonds are basic, but saccharin is acidic
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