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What ions and/or molecules are present in relatively large proportions in a solution of a weak acid HCN (aq)?
H+CN-HCNHC+N+CNCN-N3-
The density of acetonitrile is 0.786 , and the density of methanol is 0.791 . A solution is made by dissolving 21.0 in 98.5
The acid-dissociation constant for hypochlorous acid (HClO) is 3.0x10^-8 A)Calculate the concentration of H30+at equilibrium if the initial concentration of HClO is 9.0×10-3
How many joules of heat are needed to raise the temperature of 5.00 g of mercury from 25.1°C to 65.3°C?
When heat and a stream of H2 gas is applied to the sample, the Fe2O3 reacts to form metallic Fe and H2O(g). The Al2O3 does not react. If the sample residue weighs 2.499 g, what is the mass fraction of Fe2O3 in the original sample?
A beaker with 170 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.70 mL of a 0.370 M HCl solution to the beaker. How much will the p..
The random walk model used to describe gas diffusion can be treated as a binomial distribution similar to coin flips with a 50/50 chance that a particle will move in either the +x direction or the -x direction.
Gold has a density of 19.3g/ml .suppose you have 100.0 glonkins of gold., what volume in liters will the gold occupy.
values for an equlibruim constant suggests that at equilibrium the mixture contains a high concentration of products?
Draw two conjugated dienes, and two nonconjugated dienes, each with the formula C7H12 and the base name hexane. Provide the systematic name for each diene.
Calculate w (in kJ) when 137 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 345 K:
Below is the 1H NMR spectrum of the following triazine structure. In the expansions of the spectrum, place the observed multiplicity in the bin above the resonance.
Hydrocyanic acid is a weak acid with Ka = 4.9 x 10-10. What is the pH of a 0.4480 M hydrocyanic solution?
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