How many kilograms of mercury were in the barometer
Mercury has a density of 13.6 g per mL. A barometer holding 9.50mL of mercury has broken. The cost of mercury disposal is based on mass. How many kilograms of mercury were in the barometer?
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A urine sample contains 46.5mgL-1 of ethanol. The density of ethanol is 0.79gcm-3. What is the concentration expressed as %v/v.
Even with a drying tube, leaving phenylmagnesium bromide exposed to air will eventually lead to its decomposition. Why? What is the product of this decomposition pathway?
If 100.0 mL of NO (at STP) reacts with 400.0 mL of O2 at STP, calculate the partial pressure of NO2 in the final reaction mixture.
If 414 mL of a gas measured at 26°C and 641 torr has a mass of 0.384 g, what are the molecular mass and molar mass?
What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulfuric acid (98% H2SO4 by mass)?
A sample of ideal gas at room temperature occupies a volume of 23.0l at a pressure of 232torr . If the pressure changes to 1160torr , with no change in the temperature or moles of gas, what is the new volume,V2 ?
Calculate the concentrations of all species at equilibrium for each of the following cases.(a) 1.4 g H2O and 2.4 g Cl2O are mixed in a 1.0 L flask.
A sample of steam with a mass of 0.550grams and at a temperature of 100 degrees celcius condenses into an insulated container holding 4.30grams of water at 6.0 celcius.Assuming that no heat is lost to the surroundings, what will be the final temp
Methane and air in stoichiometric proportions are brought into a calorimeter at 500K. The product compositions is brought to the ambient temperature of 298K by the cooling water.The pressure in the calorimeter is assumed to remain at 1 atm, but th
Explain the only way you could distinguish these two products by NMR spectroscopy. Please see attachment (2 products by NMR spectroscopy)
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Suggest the best communication channels for the following messages. Assume that all channels are available. Be prepared to explain your choice.
what modernism was meant to be and what Hughes ultimately accomplished in his poetry. Use excerpts from Hughes's poems to support your analysis
Make a Business Presentation using Power Point Subjects for you presentation could be one of the following: Your Career Choice
How to write a formal email asking for information? Your friend told you about an upcoming seminar and gave only a brief description and email to contact.
In your opinion, what is a good CV & Resume? How important is your CV & Resume in getting a job?
Was the traffic stop lawful? Or did it violate the Fourth Amendment's prohibition on unreasonable searches and seizures?
Imagine you are the newly elected chairman of your barangay Write a letter to the City mayor requesting for a possible sponsorship in a barangay event.