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Determine the molecular weight of a compound given the gas phase data: mass of 11.8 g, temperature of 39.1 C, pressure of 630 torr, volume of 1.31 L.
Calculate the final temperature of 33 mL of ethanol initially at 13 degrees Celsius upon absorption of 657 J of heat. (density of ethanol =0.789 g/mL).
The running engine of an automobile preoduces carbon monoxide Co, a toxic gas at the rate is of about 0.117 mol CO per minute. A car is left idling in a poorly ventilated garage that is 6.0m long 4.0m wide and 2.2 m hight and 20.0 C.
Sodium atoms(Na) emit light with a wavelength(λ) of 330 nano meters when an electron moves from a state of 4 p orbital to a state of 3 s orbital now you just need to determine the energy difference between the orbitals.
Water supply in a city is fluoridated by adding NaF. The preferred concentration of F- is 1.6ppm.calculate the amount of Naf in milligrams should be added per gallon (treated water) if the water supply is 0.2 ppm in F-?
Calculate the rate constant for the reaction when the reactant concentration in a first-order reaction is given 7.30×10-2M after 15.0s and it is also reported 4.40×10-3M after 65.0s . ?
The density of benzene at 15C is 0.8787 g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.
Explain what it means that the atomic mass of naturally occurring Ag, is a mixture of its two isotopes forms, is 107.868 u.
What is the pressure in psi for a pressure head of 46.2 feet? What is the pressure in psi for a pressure reading, in psi, at the bottom of a 30 feet high reservoir, which has a diameter of 50 feet?
Aluminum hydroxide and sulfuric acid reaction, Which reagent is the limiting reactant when 0.450 mol Al(OH)3 and 0.550 mol H2SO4 are allowed to react? How many moles of the excess reactant remain after the completion of the reaction? Please explain..
Determine What would be the total volume in the graduated cylinder if density of Ag= 10.5 g/mL.?
if a raindrop weighs 65 mg on average and 5.1x10^5 raindrops fall on a lawn every minute what mass in kg of rain falls in 1.5 hours
Important information about Solution Concentrations, Find the concentration of 500mg of alltrans retinol 0.1% per 1 ounce of solution.
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