How many liters of dry hydrogen gas, measured at 798 mmHg and 21C, will be released by the decomposition of 230 mL of H20 at 1.42atm and 30C? 2 H20 (a)
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- In 2011, researchers showed that hypochlorous acid (HClO) generated by white blood cells kills bacteria. Calculate the percent dissociation of (a) 0.40 M HClO; (b) 0.035 M HClO (Ka = 2.9x10-8).Consider the following reaction at 25°C with the ΔG°’ = +1800 J/mol for the forward reaction.The molar concentrations at the beginning of the reaction were [A] = 19 mM and [B] = 10 mM.After 1 hour, the concentrations were [A] = 16 mM and [B] = 13 mM. Calculate the ΔG of the reaction at the 1 hour timepoint. Please round to 1 decimal point.Gas constant = 8.315 J/mol KChloroform is a volatile (readily changes from liquid phase to gaseous phase) once commonly used in the laboratory but now being phased out due to its ozone depletion potential. If the pressure of gaseous chloroform in a flask is 195 Torr at 25°C and its mass for 1 liter of gas is 1.25 g, what is the molar mass (g/mol) of chloroform? O None of these O 119 g/mol 10.0 g/mol O 76.3 g/mol
- Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. Co(NO3)2 (or CoCl2)From the stock solution (1.0 M), determine the volume needed to prepare 0.00, 0.04, 0.08, 0.12 and 0.16 M Co(NO3)2 solution in 50 mL volumetric flask. Obtain the calculated amounts, place in corresponding volumetric flasks and dilute to mark.Determine the concentrations (in mole fraction) of all species in the exhaust from the incomplete combustion (90% combustion) of butane (C4H10). Assume 50% excess air with respect to complete combustion is the source for the oxygen. Air composition is 79 mol% N2 and 21 mol% O2.An adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: Species Inspired Gas (%) Expired Gas (%)O2 20.6 15.1CO2 0.0 3.7N2 77.4 75.0H2O 2.0 6.2The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and 1 atm). Nitrogen is not transported into or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. Calculate the masses of O2, CO2, and H2O transferred from the pulmonary gases to the blood or vice versa (specify which) per minute. 2. Calculate the volume of air exhaled per milliliter inhaled. 3. At what rate (g/min) is this individual losing weight by merely breathing?
- Rank the following aqueous solutions in order of increasing vapor pressure. You do not need to show work for this question. A 0.03m sugar (C,H120J B. 0.03 m NaCl C.0.03m Mg(NO3)2 Lowest Vapor Pressure Select] v < [Select] |Select] * Highest Vapor PressureA helium gas cylinder of the sort used to fill balloons has a volume of 0.180 m3 and a pressure of 150 X 105 Pa (150 atm) at 298 K (25 °C). How many moles of helium are in the tank? How many grams?A quantity of gas in a piston cylinder had a volume of 0.539 m^3 and a pressure of 200 Pa. the piston compresses the gas to 0.222 m^3 in an isothermal (constant-temperature) process. What is the final pressure of the gas?
- A 1.23 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 kJ/°C, CONTAINED 745 G OF WATER. The temperature of the calorimeter and its contents increased from 23.77 °C to 27.95 °C. What is ΔH (in kJ) for the combustion of 1.00 mol of acetic acid is 60 g/mol.In a neutral solution, the [H*] is : * 1.0x10-14M zero 1.0×107M O 1.0x10-7MThe standard heat of combustion of liquid methyl cyclopentane, C6H12(l),C6H12(l), was measured to be −3937.7 kJ/mol.−3937.7 kJ/mol. What is Δ?̂ ∘f C6H12(l),ΔH^f C6H12(l)∘, the standard heat of formation of liquid methyl cyclopentane?