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How many grams of solid barium sulfate form when 21.9 mL of 0.160 M barium chloride reacts with 66.8 mL of 0.055 M sodium sulfate? Aqueous sodium chloride is the other product.
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps. He eventually decides to get himself examined.
A certain reaction has an enthalpy of change in H = 54 kJ and an activation energy of Ea=81 kJ. What is the activation energy of the reverse reaction
toothpaste contains 0.24% by mass sodium flouride used to prevent dental cavities. One tube contains 119g of toothpaste. How many moles of NaF are in the tube?
Adipic acid can be prepared by the oxidation cleaveage of the CC double bond of cyclohexne. If you require 12.5g of adipic acid what volume of cyclohexene
an electrochemical cell consists of a nickel metal electrode immersed in a solution with ni2 1.0 m separated by a
Table salt and sugar are accidentally mixed A 4.90 g sample is burned and 2.20-g of CO2 is produced What is the mass percentage of salt in the mixture?
A solution of ammonia and water contains 1.50×1025 water molecules and 5.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
Calculate the pH of a 1.00L of buffer that is 0.120M HNO2 and 0.180M NaNO2. What is the pH of the same buffer after the addition of 1.00mL of 12.0M HCl. (pKa of HNO2=3.04)
A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present
acetylacetone acac forms a trisacetylacetonateiron iii complex i.e. feacac3 in aqueous solution. a 5 ml aliquot of
A 5 cm thick beef steak is being frozen in a -30 C room. The product has 73% moisture content, density of 970 kg/m^3, and a thermal conductivity (frozen) of 1.1 W/ (m K). Estimate the freezing time using Plank's equation
How are the princible of Le chatelier's used to increase the percentage yield in the production of ammonia in the haber process?
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