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Thermal decomposition of rail car load of limestone to lime and carbon dioxide requires 3.49 x 106 kJ of heat. Convert this energy to calories.
what mixing proportion is required for lime stone with 91% CaCO3, and clay with 31% CaCO3 to get a raw mix with a CaCO3 content of 76%.
What are the conductance cell and the cell constant. Describe experimental method for the determination of the cell constant.
Determine how many milligrams of H 2 O are present in sample If the freezing point of a 100.0g sample of 2-methyl-2-propanol =24.59C?
if the initial concentration of is 0.260 and the reaction mixture initially contains no products what are the
Water will change from one phase to another as it temperature changes.In it's gaseous form, steam, water has it's highest temperature.Water in this form will not change into liquid unless a certain amount of heat is removed.An example, is the cond..
A solution containting 1.45g of an unknown substance in 26.5g of succinonitrile was found to freeze at 34.4 degrees celcius. what is the molar mass of the unknown substance.
A 15.0- mL sample of 0.100 Ba(OH)2 is titrated with 0.125 M HCl. Calculate the pH for at least five different points throughout the titration curve and make a sketch of the curve.
One liter of a buffer solution is prepared by dissolving 0.115 mol of NaNO2 and 0.070 mol of HCl in water. What is the pH of this solution? If the solution is diluted two fold with water, what is the pH?
The density of lead is 11.3 g/ml . The water level in a graduated cylinder initially at 217 ml rises to 286 ml after a piece of lead is submerged. What is the mass in grams of the lead?
How many grams of manganese may be formed by the passage of 32,349 C through an electrolytic cell that contains an aqueous
How many milliliters of 3.4 M NH4Cl must be added to 250 mL of 0.23 M NH3 to obtain a buffer solution having pH=9.40
In the standardization of NaOH, 38.76 mL of NaOH was required for 0.8169 g potassium acid phthalate. Estimate the accuracy we should expect in the molarity of the NaOH solution assuming the weighing error is ±0.1 mg
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