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What volume of pure oxygen gas measured at 740 torr and 27 degree C will be obtained when 15.0 g of potassium chlorate are decomposed? 2KClO3 -------> 2KCl + 3O2 use stoichiometry and Ideal gas law
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
How many moles of CH_3_COOH are present in the beaker? What is the concentration of acetic acid?
Lidocaine is thought to bind to receptors in its methylated form. identify in writting the atoms or groups in the compound that could be involved in its binding to a receptor via- hydrogen bonding (1 example)
The mass of a golf ball is 45.9 G . If it leaves the tee with a speed of 65.0 M/S, what is its corresponding wavelength
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solution of rhodamine 6G, what pathlength cell will be n..
Differentiate between the dfferent bond types of orbital overlap required to obtain a sigma bond and pi bonds
Assuming that seawater has a total ion concentration (a.k.a colligative molarity) of 1.10 Mc, calculate how many liters of seawater are needed to produce 15.4 L of fresh water at 20 °C with an applied pressure of 75.0 bar.
Arsenic acid (H3AsO4) is a triprotic acid with Ka1 = 5. 10-3, Ka2 = 8. 10-8, and Ka3 = 6. 10-10. Calculate [H + ], [OH ? ], [H3AsO4], [H2AsO4? ], [HAsO42- ], and [AsO43- ] in a 0.62 M arsenic acid solution.
How would increasing the molarity of the NaOH solution from 0.5M to 1.0M affect the number of drops required for the observed color change to occur
An electron (electron mass 9.11 x 10^- 31kg) moving near an atomic nucleus has a speed of 6 x 10^6 ± 1% m/s. What is the uncertainty in its position. 1) 1 x 10^-9m 2) 2 x 10 ^-9m 3) 1 x 10^-11m 4) 2x 10^-11m 5) 3 x 10^-11m
The initial mass of the the crude ether was 141 mg. The mass after recrystallization was 121 mg. Calculate the percent recovery from recrystallization.
When the liberated hydrogen gas is collected over water at 29 degrees celsius and 752 torr, the volume is found to be 343 mL. The vapor pressure of water at 29 degrees celsius is 30.0 torr. What is the mass percentage of aluminum in this alloy?
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