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What is the molar enthalpy of solid sodium hydroxide reacts with an aqueous solution of hydrochloric acid, forming water amd an aqueous solution of sodium chloride?
Calculate the pH at the beginning of a titration of 50.00 of 0.005M HA (Ka=2.0*10^-2) with NaOH solution. If the quadratic equation is assumed to be accurate
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water.
Which of the following compounds would you expect to be ionic?
calculate the final temperature of a mixture of 130.0 g of ice initially at -22.5 Celsius and 310.0 g of water initially at 80.5 Celsius.
Draw the skeletal structure of the indicated species. LDA is added to a solution containing phenyl propanoate. After this reaction has gone to completion, 3-pentanone is added.
you have dissolved 0.298 g of soda ash into 80 mL of deionized water. It took 19.8 mL of 0.0998 M HCl to titrate the solution to the second equivalence point. What is the percent Na2CO3 in the soda ash?
What symbol is used in a chemical equation to represent the following phrases? Select the symbol in blue and drag it into the appropriate bin
Calculate the energy change for the reaction K(g) + I(g) → K+(g) + I- (g) given the following ionization energy (IE) and electron affinity (EA) values. IE K = 419 kJ/mol, IE I = 1010 kJ/mol; EA K = 48 kJ/mol. EA I= 295 kJ/mol
You are asked to prepare 150 mL of a 0.059 M solution of silver nitrate. How many grams of silver nitrate do you need to weigh out.
How many total atoms are there in each unit cell? (b) What is the volume of one unit cell in Å3? (c) Assuming that the atoms are spheres and the radius of each sphere is 1.64 Å
enzyme responsible for part of the signaling cascade that leads to replenishment of the stomach lining is inhibited by these drugs. How does it differ from the COX-2 enzyme responsible for inflammation?
How many grams of O2 will dissolve in 1.75L of H2O that is in contact with air where partial pressure of O2 is 0.209atm?
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