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Calculate the molarity of Ag in a solution resulting from the mixing of 30 mL of a 0.0250 M AgNO3 solution and 11.51 mL of K2CrO4 that is 0.0697M
Calculate the pressure when temperature is increased to 383 0C and volume of container keeps constant?
A 28.0-g sample of nitrogen gas combines completely with 6.0 of hydrogen gas to form ammonia. What is the mass of ammonia formed.
If specific amount of carbon reacts with 1.00 g, 1.50 g, and 2.00 g of Hydrogen to form compounds of A, B, and C respectively,
Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 143 mL of ethanol.
Explain PH and Biochemistry, Determine the weight in grams of sodium dihydrogen phosphate (M.W.138.01) and disodium hydrogen phosphate (M.W 141.98) needed to prepare 1L of a standard buffer at pH 7.00, with a total phosphate concentration of 0.100..
Calculate the average atomic made of boron which has 2 isotopes. Boron-10 has an abundance of 19.9% and boron-11 has an abundance of 80.1%.
assuming no heat loss, and that the specific heat (capacity) of water is 4.184 J/g*K, what is the heat capacity of the copper in J/K?
How many moles of Mg3N2 would be produced when 180.0 g of Mg reacts with 85.0 g of N2.
First determine the number of moles of rm Na^+ using the given molarity and volume. Next, use the chemical formula to determine the number of moles of rm Na_3PO_4 needed. Finally, convert moles to grams using the molecular weight of the compound.
Calculate the pH of each of the following solutions. (a) 0.115 M HONH2 (Kb = 1.1 10-8)
Tris is widely used in a biochemical laboratory. Its acid dissociation constant is 8.32 x 10^-9. You have available at your lab bench a 0.1 M solution of Tris in its protonated form, 0.1 M solution of HCL and NaOH,
Calculate the number of grams of HC2H3O2 needed to make 450 mL of 0.322 M solution.
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