What was the molarity of the sodium carbonate solution
A 447 cm3 volume of Na2CO3 solution was warmed with an excess of sulfuric acid until all action ceased. A 5.0 L volume of dry CO2 gas measured at STP was given off and collected. What was the molarity of the sodium carbonate solution?
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The concentration of a dye and concentration of bleach (NaOH) was determined experimentally by using Beer's Law. The rate constant is unknown. How do you calculate the reaction rate based on the graph of the reaction and the 2 concentrations of t
An anakysis of river water yields C : N : P = 41.3 : 2.4 : 0.3. Compare this to the Redfield Ratio of C : N : P = 106 : 16 : 1.What is the CEC (in meq/100 g) of a soil that contains 25.8 mcg/ml Ca2+, 3.4 mcg/ml Mg2+, and 2.2 mcg/ml K+?
Magnesium metal burns in the presence of gaseous oxygen to produce solid magnesium oxide. If 12.5 moles of magnesium reacts with 5.25 moles of oxygen, how many moles of magnesium oxide can be produced?
Sucrose (table sugar) has the formula C12H22O11 (molar mass=342.30 g/mol) and a food value of 6.49 kJ/g. Determine the calorimeter constant of the calorimeter in which the combustion of 2.360 g of sucrose raises the temperature by 1.81°C.
A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.180 g of this subunit was dissolved in enough water to produce 2.00 \rm mL of solution.
The temperature of a 22.0 g sample of material increases from 190.0 degree C to 42.0 degree C when it absorbs 5.00 kJ of energy as heat. What is the specific heat of this material?
What is the maximum height achieved if a 0.500 kg mass is thrown straight upward with an initial speed of 55 m*s^-1? Ignore the effect of air resistance.
25.0 ml of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 mL of the base solution has been added, the ph in the titration flask is 3.00.
Write the structure of three different substituent groups that activate substituted benzene rings toward electrophilic aromatic substitution.
A mixture of the compounds aluminum oxide and magnesium chloride contains 39.0 g of aluminum oxide and is 49.9 % by mass magnesium chloride. Calculate the mass (g) magnesium chloride in the mixture.
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