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Calculate the concentrations of all species in a 0.100 M H3PO4 solution given the following Ka's: 7.5 X 10^-3 for H3PO4, 6.2 X 10^-8 for H2PO4-, and 4.8 X 10^-13 HPO4^2- Draw each of the structures.
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 550. mL of 0.906-M solution of NH3 in order to prepare
If 8.0 moles of the gas A is palced in a 60.0 L tank with 1.0 moles of B at 0 degress celsius and 1 atm, they react according to this equation: 2A(g) + B(g) --> 3C(g) +D(g) How many moles are present in the tank when the reaction is complete
a sample of vinegar of 50 ml and density of sample 1.06 gml was diluted to 500 millilitres. titration of a 50 ml of
a 0.20 solution of is used to titrate 28.0 of a solution of unknown concentration. if 160ml of hcl is required what is
What is the percent ionization of a solution prepared by dissolving 0.0223 mol of chloroacetic acid, HC2H2O2Cl) in 1.80 L of water? For chloroacetic acid, Ka = 1.4 ? 10-3.
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
How much heat is needed to warm 45.6 grams water from 23.0° C to 40.0 °C?
The reaction described in Part A required 3.50L of calcium chloride. What is the concentration of this calcium chloride solution
a 381- sample of unknown solution reacts completely with to form 13.1 . what was the concentration of the
identify the following as elements or compounds a nh3 b n2 c co d co and e he. give the numbers of protons and
The density of the unknown solution is 1.232g/mL. Calculate the specific gravity of the solution.
determination of the partial pressures of the gases.a mixture of cs2nbspg and excess o2nbspg is contained in a
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