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In 1997 LA County air had carbon monoxide (CO) levels of 15.0ppm. Average human inhales about 0.50 L of air per breath and takes about 20 breaths per minute. Explain how many milligrams of carbon monoxide does the average person inhale in a 6 hour period for this level of carbon monoxide pollution? Presume that carbon monoxide has a density of 1.2g/L.
For the cell diagram T1 and Pt Enter part(a), (c) with 2 siginificant digits and part(b) with 3 siginificant digits. Enter scientific notation as 1.23E4. (a) What is Ecell if the unknown solution in the half-cell on the left has pH = 4.94
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2
question a water carbonating plant operates by providing carbon dioxide at 5.0 atm. estimate the molar concentration of
Explain how this model can be used to reduce the number of dangling bonds from 49 (unreconstructed) to 19 (constructed). B. Explain the origin of the name dimer adatom stacking fault.
The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule. Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas
Calculate the pH of a buffer solution that is 0.250 M in HCN and 0.170 M in KCN. For HCN, Ka = 4.9 x 10^-10 (pka = 9.31). Use the equilibirum approach to calculate this pH
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 200.0 mL of 0.12 M NH3. The Kb for NH3 is 1.8 x 10-5.
Glucose makes up about 0.10 % by mass of human blood. how do you calculate the molality.What further information would you need to determine the molarity of the solution
The chlorination of pentane gives you a mixture of 1-chloropentane, 2-chloropentane, and 3-chloropentane. What are the ratios most to least that these products will be formed
Could someone explain this competition and interaction? I know that chromatography is based on the attraction with the stationary phase or mobile phase
a 1.0 m cuso4 solution was electrolyzed for 28 minutes and 22seconds using copper electrodes. the average current
A 52.0-g sample of an alloy at 93.0°C is placed into 379 g of water at 22.0°C in an insulated coffee cup. Assume that no heat is absorbed by the cup.
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