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Explain what features do all the resonance forms of a molecules or ion have in common? Choose all that apply.
a) Arrangement of electrons
b) Formal charge on each atom
c) Net charge on the molecule or ion
d) Arrangement of atoms
e) None of these are common between resonance forms
f) Atoms present
g) Number of electrons
The solubility of borax at roomp temperature is about 6.3 g/100 mL. Assuming the formula of borax to be Na2B4O5(OH)4 * 8H2O ( Molar mass = 381.37g/mol), What is the molar solubility of borax and what is the ksp of borax at room temperature
a 1.00 ml sample of dilute acetic acid required 23.4 ml of 0.10 m sodium hydroxide solution to titrate the sample to a
Estimate the temperature above which this reaction is spontaneous. DS0 = 16.1 J/K. CH4(g) + N2(g) + 163.8 kJ ® HCN(g) + NH3(g)
For 2.25 moles of an ideal gas, Pext=P=200x10^3 Pa. The temperature is changed from 122 C to 28.5C and Cv=3R/2. Calculate the q, w, delta U and delta H for an isochloric process.
A student is asked to prepare a 1 L buffer by adding 0.11 M sodium acetate to 0.09 M acetic acid solution. What is the pH of the buffer? Ka for acetic acid is 1.8 x10 -5
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq). The ionization constant for HClO can be found here.
calculate the expected ph of a 25.0 ml solution of 0.200 m acetic acid that is being titrated with a 0.100 m solution
(a) What is the product. (b) Provide a mechanism showing the formation of the product at a. (c) Suggest a more feasible synthesis condition for the conversion.
What volume (in mL) of 0.583 M solution of sodium chloride can be made from 48.3 mL of a 1.88 M solution? Assume the volumes are additive
If a stream of N2O is passed through a tube 30mm in diameter and 25cm long at a flow rate of 0.7L/min, at what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in the exit gas? Assume that the total pressure of t..
the balanced equation for the combustion of ethanol is2c2h5ohg 7o2g reg 4co2g 6h2oghow many grams of dioxygen are
a 1.80-g sample of a large biomolecule was dissolved in 21.0 g of carbon tetrachloride. the boiling point of this
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