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Explain A solution is known to contain cl-, no3-, no2-, and so42- ions. Explain which of these ions can be positively identified? Explain the reactions used and the results
hydrogen peroxide can decompose to water and oxygen by the reaction2 h2o2l 2 h2ol o2g ?h -196 kjcalculate the
Estimate the solubility of silver iodide in pure water at 25 degrees Celsius (a) in moles per liter and (b) in grams per liter.
Which of the following salts will make an ACIDIC solution when dissolved in water. a. NH4Cl b. Al(NO3)3 c. K2CO3 d. NaF Which of the following salts will make a BASIC solution when dissolved in water. a. NaHS b. Cu(NO3)2 c. KHCO3 d. NaF
A ground-state H atom absorbs a photon and makes a transition to the n = 4 energy level. It then emits a photon of energy 4.085 x 10^-19 J. What is the final energy and n value of the atom
The piston is then moved in and the heat rejected by the air reversibly at constant pressure until the volume is= initial volume. compute The net heat flow and the overall change in entropy?
A compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by mass). Calculate the empirical formula of this compound.
Calculate the heat of reaction for the same reaction where water is a gaseous product instead of a liquid.
Does anyone know the balanced equation piperonaldehyde (C8H6O3)+ acetophenone (C8H8O)= 3,4-methylenedioxychalcone(C16H12O3)
if 28ml of 6.2 m sulphuric acid was spilled determine what is the minimum mass of sodium bicarbonate or sodium hydrogen
given what you know of dna rna and proteins why does it make sense that nucleic acids can serve as templates to make
how many grams of benzene are needed in 46.3 grams NaBr (103 g/ mol)? the freezing point of solution to 3.94 degree C?
if 0.176 moles of mg have combined with 0.220 moles of o what is the empirical formula of the
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