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If 25mL of 0.2 M H3PO4 solution is required to neutralize 60mL of a Ba(OH)2 solution then explain what is the molarity of the Ba(OH)2 solution?
Pour 25 ml of acetone regent grade into the flask as well as add 6.0 g of sodium iodide and 5.2 g of 1-bromobutane. CH3CH2CH2CH2Br + BrI -------> CH3Ch2CH2Ch2-I + NaBr
The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams of methanol?
A gas mixture is made by combining 8.1 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 19.20 L. What is the molar mass of the unknown gas?
How many moles of air are there in a flask with a volume of 125ml if the pressure is 745 mm Hg and the temperature is 22C
At 25.0°C the rate constants for the forward and reverse reactions are 1.40 x 10-28 M-1 s-1 and 9.30 x 1010 M-1 s-1, respectively. What is the value for the equilibrium constant at 25.0°C
An aqueous solution that contains 329 ppm of KNO3 is being used to feed plants in a graden. What volume (in mL) of this solution is need to prepare 9 L of a solution that is 23 ppm in KNO3?
Calculate the initial concentration of the colored reactant if the absorbance is 0.605 at the beginning of the reaction.
A liquid begins to appear on the inside of a closed flask. At first glance before the liquid began to appear, you might have thought the flask was empty
calculate the molarity of acetic acid in a viegar sample knowing that 5.00 ml of vinegar requires 43.50 ml of 0.105 m
calculate the pKa value of the acid and determine the number of moles of acid initially present.b) when the reaction is complete, what is the concentration ratio of conjugate base to acid?
The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×1..
Use the ideal gas and the van der Waals equations to calculate the pressure when 3.00 mol of H2 are confined to a volume of 1.00 L at 298 K
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