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1) The concentration of carbon monoxide in an urban apartment is 48 µg/m3. what mass of carbon monoxide in grams is persent in room measuring 11.0 ft x 11.5 x 20.5 ft?
2) A copper refinery produces a copper ingot weighing 150 Ib. if the copper is drawn into wire whose diameter is 7.50 mm, how many feet of copper can be obtained from the ingot? the density of copper is 8.94 g/cm3. ( Assume that the wire is a cylinder whose volume V = pr2h, where r is its radius and h is its hight or length.)
When a mixture of 12.5g of acetylene (C2H2) and 12.5g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H2O
What is the pH of a soft drink in which the major buffer ingredients are 6.6 g of NaH2 PO4 and 8.0 g of Na2HPO4 per 355 mL of solution
A nuclear explosion generates so much heat that it turns steel structures in the immediate area into steel vapor. What is the correct name of the type of phase transition that is represented by this process
A solution of NaOH(aq) contains 8.7 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
the data in the table below were obtained during a colorimetric determination of glucose in blood serum.glucose
Calculating the Moles of Aspirin, The molecular formula for aspirin is HC9H7O4, Calculate the molecular weight for aspirin
An unknown solid mixture containing benzoic acid,copper(II)sulfate and sand. She added 15mL.of acetone to her sample. Which component of the mixture dissolved in the acetone?
Suppose you carry out a TLC separation of acetaminophen and phenacetin on silica gel using a nonpolar solvent. Which should have the higher R1 value. why
HCl + NaOH = NaCl + H2O If 200 mL of a .20 M HCl solution is consumed in the above reaction, how many grams of each product would be produced.
Write the complete balanced molecular, ionic, and net ionic equations for the reaction of potassium phosphate + aluminum nitrate. Which product, if any, is a precipitate
What is the percent by mass of oxygen in a gaseous mixture whose molar composition is 0.500% CO2 and 99.500% air?
A sample of gas occupies a volume of 400 mL at 0.740 atm and 70 oC. Calculate the pressure of the gas if its volume is changed to 360. mL while its temperature is held constant.
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