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Ammonia can be made by reaction of water with calcium cyanamide.CaCN2 (s) + H2O (l) → CaCO3 (s) + NH3 (g)
When the equation is properly balanced with the lowest whole number coefficients, what is the sum of ALL the coefficients?
Calculate the concentration of an oxalic acid (H2C2O4) solution when 48.1 mL of water is added to 18.2 mL of a 1.78 M oxalic acid solution
When a student cleans their dorm room, the entropy of the system must decrease. How is this NOT a violation of the second law of thermodynamics?
Problem- The base dissociation constant for (CH3)3N is 6.31X10-5. What is the ph of a solution initially containing 5.250g (CH3)3N dissolved in 250.0 ml of solution when it reaches equilibrium
Calculate the empirical formula of the compound (CxHyOz). B) If the 4.00g sample corresponds to 0.0666 moles of a compound, what is the molecular formula of the unknown molecule (CxHyOz)
Draw structural formulas (full or condensed) and give the molecular formulas for the following compounds. a)2-methylpropane b)2,4-dimethylpentane c)2,2-dimethylpentane
question suppose that 450.9 j of heat energy is required to completely vaporize 3.1 g of a pure liquid. if the molar
Provide the structure of the Claisen's pruduct in the self condensation of methyl phenyl acetate.
Calculate the pH of a 100.0 mL buffer that is 0.158 M HClO and 0.099 M NaClO after adding 1.0 mL of 5.9 M NaOH solution. (Ka for HClO given at 2.9*10^-8 and assume the volume change of added NaOH solution is negligible)
The half life of a first order reaction is 1.5 hours. How much time is needed for 94% of the reactant to change to product?
A piece of gold foil has a volume of 0.645cm^3. If the piece of gold measure 10.0 cm by 12.5cm, what is the thickness of the foil
How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 165 mL of ethanol? Density of ethanol is 0.789g/cm3 ?
In a calorimeter, 100 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed.
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