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A periodic wave has a period of 0.40 s. What is the wave frequency? What is the period of the wave motion for a wave with a frequency of 0.50 kHz? Compute the wavelength in air of ultrasound with a frequency of 50 kHz if the speed of sound is 344 m/s.
Calculate the molarity (M) of Ba2+ in a solution prepared by adding 0.200 L of 0.400 M Ba(ClO4)2 and 100 mL of 0.400 M Ba(ClO4)2 . Assume volumes are additive.
Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring,
Calculate the concentrations of all species present, the pH, and the pecent dissociation of HCN
While a 1.150 g sample of iron ore is treated with 50.0 ml of HCL the iron dissolves in the acid to form a solution of FeCl3. The FeCl3 solution is diluted to 100.0 ml and the concentration of Fe^3+ ions is determined by spectrometry to be0.095 mo..
The enthalpy of a solution of KBr in water is about +198 kJ/mol. Nevertheless, the solubility of KBr in water is relatively high. Why does the solution process occur even though it is endothermic
write a net ionic equation for the reaction between aqueous solutions of ammonia and hydrofluoric
Specify the number of protons, neutrons, and electrons in the neutral atom iron-56. Enter your answers as integers separated by commas. The ion has _____ protons and _____ electrons
Using the half-reaction method, balance the following oxidation-reduction reaction which occurs in acidic solution. Be sure to show the each step in balancing both half-reactions
The wall of the flask is periodically rinsed with the previously boiled, deionized water from the wash bottle. How does this titrimetric technique affect the reported percent acetic acid in the vinegar. Explain.
If a breath of air, with a volume of 0.50 L, is drawn into the lungs and comes to thermal equilibrium with the body at 37°C while the pressure remains constant, calculate the increase in enthalpy of the air if the initial air temperature is 20 °C ..
a student performed the nitration of benzoic acid. shehe started with 7.2 g of starting material and obtained 4.8 g of
Question- Classify the following pair of compounds as constitutional isomers, geometric isomers, the same compound, or not isomeric.
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