Write the equilibrium expression for the reaction
CHCOOH ↔ CH3COO- +H+ Write the equilibrium expression for the reaction. What is the concentration of H+ if the pH is 4.5? How would the concentration of each species change if H+ was added to the reaction from an outside source?
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The flask was then shaken until the solution was uniform. A 30.0-mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
If 414 mL of a gas measured at 26°C and 641 torr has a mass of 0.384 g, what are the molecular mass and molar mass?
An eight lane urban freeway (four lanes in each direction) is on rolling terrain and has 11-ft lanes with a 4-ft right-side shoulder. The interchange density is 1.25 per mile.
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 268 {rm torr}. Pure pentane and hexane have vapor pressures of 425 {rm torr} and 151 {rm torr}, respectively, at room temperature. What i
A 0.560-g sample of acetic acid is added to enough water to make 50.00ml of solution. Calculate [H+], [CH3COO-], [CH3COOH], and the pH at equilibrium. Ka for acetic acid is 1.8x10-5.
after 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32.
The difference between the total and static pressure before a shock is 75 psi. What is the maximum static pressure that can exist at this point ahead of the shock?
What is the pH of a solution obtained by dissolving two extra-strength aspirin tablets, containing 480 mg of acetylsalicylic acid each, in 210 mL of water?
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Jack argues that the non-holistic model of things works just fine in many areas, such as medicine. A man complains of gallstones, has the gallbladder removed,
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