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When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation.
KCN(aq) + HCl(aq) ? KCl(aq) + HCN(g)
If a sample of 0.228 g of KCN is treated with an excess of HCl, calculate the amount of HCN formed, in grams.
The air in a 5.00-L tank has a pressure of 1.20 atm. What is the new pressure, in atm, of the air when the air is placed in tanks that have the following volumes if there is no change in temperature? a) 1.00 L. b) 2500. mL. c) 750. mL. d) 8.0 L.
Glutamine, glycine, aspartic acid, threonine, isoleucine and arginine form a hexapeptide. What would be the overall charge of this peptide at pH 1
100 mL of 0.150 M acid HA are mixed with 100 mL of 0.0800 M NaOH. Calculate the titration constant, kt, of the resulting reaction. Ka = 1.0 x 10-5
suppose you titrate a 25 ml sample of vinegar with 17.62 ml of a standardized 0.1045 n solution of naoh. what is the
A Chemistry experiment requires 25.2g of silver nitrate, how many grams of a 15.5% by mass solution of silver nitrate should be used
A 2.50 liter container is filled with 175g of Argon. If the pressure is 10.0 atm, what is the temperature.part B: If the temperature is 225 K, what is the pressure
how much work is needed to lift a water molecule by 15 km? pretend that the gravity force is the same throughout. give
What mass of Al2O3 in grams can be made by reaacting 4.6 g AL with excess oxygen?
Calculate the molality and molarity of an NH3 solution made up of 37.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL.
Calculate the pressure (in atm) exerted by 1.00 mole of acetylene at 125°C in a 20.0-liter container. The van der Waals constants for acetylene are: a = 20.0 L2 • atm/mol2, b = 0.100 L/mol.
Consider a 0.53 M solution of each of the following salts in distilled water. Will the solution be acidic, neutral, or basic? You may need to reference a table of Ka and Kb Tables values
Identify each of the following as a homogeneous or heterogeneous equilibrium: a)CO(g)+H2(g) C(s)+H2O(g). b)NH4Cl(s) NH3(g)+HCl(g). c)CS2(g)+4H2(g) CH4(g)+2H2S(g). d)Br2(g)+Cl2(g) 2BrCl(g).
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