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Write the chemical equation for the ionization of each of the following weak acids in water. (Some are polyprotic acids; for these write only the equation for the first step in the ionization.) Do not include physical states, and use the smallest possible integer coefficients.
A) HNO2
B) H3PO4
C) HAsO42-
D) (CH3)3NH+
a chloroform solution of caffeine c8h10n4o2 contains concentration of 0.0868 m . compute mole fraction of
In a treatment that decreases pain and reduces inflammation of the lining of the knee joint, a sample of dysprosium- 165 with activity of 1100 counts per second was injected into the knee of a patient suffering from rheumatoid arthritis.
When 157mg of dipentylamine was added to 122mg of benzoic acid and 2mL of water, a completely homogenous solution was formed. Draw the sturctures of the species present in the water.
what is the final temprature of 0.1222 mol of a perfect monatomic gas that preform 75 j of work adiabatically if the
gaseous hydrocarbon required 50 mL of oxygen for complete combustion. If 30 mL of CO2 gas were evolved, what is the molecular formula of the hydrocarbon?
What is the molar solubility of Co(OH)2 in a buffered solution that has a pH of 10.43?
What is the pH when 100 mL of 0.1 M NH3 is titrated with 50 mL of 0.2 M HCl? pKa of NH4Br is 9.25.
Predict the products likely to be formed via the anti- addition of Br2/acetic acid to trans- cinnamic acid. • What is the predicted m.p. of the brominated product(s) you prepare via this method
an element t burns in air with a blue flame forming white fumes which dissolve in water to form a solution that turns blue litmus paper red(t is not the actual symbol)
a total of 2.00mol of a compound is allowed to react in a foam coffee cup that contains 177g of water. the reaction
How many moles of chloride were present in the unknown. d. What mass of cholride was present in the unknown? e. What was the mass percentage of cholride present int the original sample
Excess aqueous Hydrochloric acid was added to a 0.415 gram sample of an alloy of aluminum and copper.the aluminum dissolved, evolving hydrogen gas, while the copper, remained inert. 436 ml of gaseous hydrogen was collected over water at 24.6 degre..
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