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Predict products and write the net ionic equation for the following reaction that occurs in aqueous solution. The spectator ion(s) is/are:
NiS(s) + HCl --> ??
Determine the limiting, excess reagent & percent yield of the reaction - How much excess reagent is left after the reaction reaches completion?
Determine the entropy change for freezing 6.33 grams of C 2 H 5 OH at 158.7 K? H =-4600 J/mol. Express your answer in units of J/K.
Draw the molecule by placing atoms on the grid and connecting them with bonds. If there is more than one answer, draw all o
Calculate the approximate amount of unknown acid to use such that it would require about 15 mL of 0.05M NaOH to reach the endpoint.
30.0 mL of pure water at 280. K is mixed with 50.0 mL of pure water at 348 K. What is the final temperature of the mixture? Ignore significant figures for this problem.
determine the equilibrium concentrations.at a particular temperature k1.00 x 102nbspfo rthe reaction.h2g f2g
Nicotine, a component of tobacco, is composed of C, H, and N. A 12.075 mg sample of nicotine was combusted, producing 32.757 mg of CO2 and 9.391 mg of H2O. What is the empirical formula for nicotine?
When heated, the DNA double helix separates into two random-coil single strands. When cooled, the random coils form the double helix
What is the mass concentration of oxygen in the mixture? (Note that the vast majority of oxygen is bound to other atoms.) Give answer in g/L, 2 significant digits.
A shelf containing several chemicals (Salicylic acid, 4-(4-Hydroxyphenyl)butan-2-one {a.k.a. Raspberry Ketone} and 4-methylaniline) fell and the vials shattered.
albr3 is sold as a solution in ch2br2. this is a rather exotic solvent and somewhat difficult to work with as well
following reactions1 naoh co2 m nahco3 m k12nahco3 h na h2co3 k23 2nahco3 m nahco32 m k3 kis are the rate
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