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Acetylene gas (C2H2) is produced as a result of the following reaction. CaC2(s)+2H2O(l) = C2H2(g)+Ca(OH)2(aq) . If 32.0 g of CaC2 are consumed in this reaction, how many moles of H2O are needed?
25.0 ml of 0.212 M NaOH ia neutralized by 13.6 ml of an HCl solution. The molarity of the NAOH solution is?
Calculate the change in enthalpy and entropy of 50 g of liquid water starting at 10 degrees Celsius and completely evaporating into H2O gas at 100 C.
The production of iron and carbon dioxide from Iron (3) oxide and carbon monoxide is an exothermic reaction? how many kj of heat are produced when 3.40 mol Fe2O3 reacts with excess of CO.
What is the Volume of 0.75 mol of Benzene (C6H6) at 20.7 degrees C. The density of Benzene is 0.879 g/mL
What is the composition in mole fractions of a solution that has a vapor pressure of 39 at 20 ? Express your answer using two significant figures.
Determine the molecular formula of the compound at the temperature of 120 degrees celsius and Pressure 750 mm hg, if 1 l of the gaseous compound weighs 2.3 grams? '
Calculate How many grams of pure, solid sodium hydroxide are needed to make 500 mL of 0.15M NaOH solution and also express the answer in just 2 significant figures?
calculate the pH of solution formed by mixing 150 mL of 0.10M HC7H5O2 with 100 mL of 0.30M NaC7H5O2. The Ka for HC7H5O2 is 6.5 E -5
Aluminum nitrate and ammonium chloride react to form aluminum chloride, nitrogen, and water. what mass of aluminum chloride is present after 74.7 g of aluminum nitrate and 56.8 g ammonium chloride have reacted completely.
The international unit for weighing diamonds and determine the volume of a 0.76 carat diamond if The density of diamond is given=3.51 g/cm3 ?express your answer in units of cm3
calculate the solubility of Ca(OH)2 in a 0.469M Cacl2 solution at 31 Degrees, given the Ksp of Ca(OH)2 is 4.96*10^-6. give answer in milli molar units.
If 18.2 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia.
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