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What are the importance of amino acids in physiological processes, in nutrition and in the different uses of these.
calculate the pH of a solution formed by mixing 65 mL of .27 M NaHCO3 with 75 mL of .12 M Na2CO3
Suppose that a fully charged lead-acid battery contains 1.50 L of 5.00 M H2SO4. What will be the concentration of H2SO4 in the battery after 3.30 A of current is drawn from the battery for 8.00 hours?
Determine how many grams of the following solutes would be needed to make 550 mL of a 0.700 M solution.
The mass of the empty beaker was 27.430g. After the water was added, the beaker had a mass of 37.416g. Calculate the density of the water.
A gaseous mixture of 02, H2 and N2 has a total pressure of 1.50atm and contains 8.20g of each gas. Find the partial pressure of each gas in the mixture?
Write a net ionic equation, including states for teh reaction of Cobalt (II) Chloride and Silver Nitrate 2. Circle the species in which nitrogen has the highest oxidation number
The half-life for the radioactive decay of U-238 is 4.5 billion years and is independent of initial concentration. How long will it take for 10% of the U-238 atoms in a sample of U-238 to decay?
Determine the concentration of CO32- ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 x 10-7 and Ka2 = 5.6 x 10-11."
The compound MgI2 times XH2O is analyzed to determine the value of X. A 1.557-g sample of the compound is heated to remove all the water, 1.0254 g of MgI2 remains
What is the PH after .15 mol of NaOH is added to .050 mol of propanic acid and ,080 M of sodium propanoate with a ka of 1.3x10^.5
How many grams of water would you add to 1.00 kg of 1.34 m CH3OH to reduce the molality to 1.00 m CH3OH
In a second 50.00mL aliquot, the ClO4- was reduced to Cl- with V2(SO4)3. Titration of the reduced sample required 40.12mL of the AgNO3 solution. Calculate the %KCl and %KClO4 in the sample
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