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Why are the standard reagents used in neutralization titrations generally strong acids and bases rather than weak acids and bases?
how many mols of o2 are produced by the reaction of 156g of co2 with an excess of ko2
Two organic species are produced when 1,1-dimethylethylmagnesium bromide reacts with 1-pentyne (a) Draw the skeletal structure of the new Grignard produced
what would the coefficent of Al(NO3)3 be in the balanced equation?
Write a net ionic equation for the precipitation reaction, if any, that occurs when aqueous solutions of the following ionic compounds are mixed. Cu(Ch3COO)2 and Na3PO4.
The addition of anhydrous calcium chloride to the crude product obtained from the separation procedure often results in the product becoming clear (transparent). What causes the clearing?
A 100g iron ball (specific heat= 0.473 J/g degrees celcius) is heated to 125 degrees celcius and placed in a calorimeter holding 200g of water at 25.0 degrees celcius. What will be the highest temperature reached by the water?
When the ore lead (ll) sulfide burns in oxygen, the products are lead (ll) oxide and sulfur dioxide. Part A: Balance the equation: express the answer as a chemical equation. identify all of the phases in your answer
calculate the activation energy for diffusion for a system where the diffusion coefficient doubles its value from 700k to 1200k. R=8.314J/molk.
CH4 + 2 O2-> CO2 + 2 H2O How many grams of CO2 are formed from the combustion of 9.00 moles of methane, CH4, in oxygen?
If you have three pyruvate molecules each labeled with 14C at different positions (one is labeled at the carboxyl, one at the carbonyl, and one at the methyl), feed them sequentially to pyruvate dehydrogenase and the citric acid cycle,
How do you calculate the pH of a solution given the concentration of OH- ions?
What is the molar mass of the enzyme if the osmotic pressure of the solution at 298K is 0.138 ATM? Note that enzymes are non-electrolytes.
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