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The multiple components of crude oil are separated by a process called fractionation (fractional distillation) at petroleum refineries.
NaOH is added to 625 mL of 0.250 M weak acid (Ka = 5.62 × 10-5). What is the pH of the resulting buffer?
the mileage for a motorcycle with a fuel tank capacity of 22 l is 35 miles per gallon. the density of gasoline is 0.74
containing granite basins tend to become acidified by acid rain more readily than lakes lying in calcium carbonate, CaCO3, limestone basins. Explain why?
Cyclopropane gas is 85.7 % C and 14.3 % C H by mass and has a density of 1.71 g/L at 755 mm Hg and 25C. a) What is the molar mass of cyclopropane. b) What is the chemical formula for cyclopropane
How many moles of each ion are in each solution? (a) 2 mol of potassium perchlorate dissolved in water K+ mol ClO4- mol (b) 255 g of magnesium acetate dissolved in water Mg2+ mol C2H3O2- mol
Corrosion is said to be severe if the cell potential is calculated at greater than 0.41 V. Under these conditions, Explain what is the iron(II) concentration on the rebar
calculate collapse energy i.e. pe change of world trade towers 410 m tall total mass 1.25 mega tons calculate change
If the barometric pressure on a mountain top in colorado is 521 mm of mercury what is the pressure in inches of hg. in atmospheres. in Pascals
Consider the following chemical equation. A) Fe2O3(l) + Al(l) --> Fe(l) + Al2O3(s) If 25.0 g of molten iron(III) oxide reacts with 475 g of aluminum, what is the mass of the iron produced
which of the following alcohols undergoes dehydration at the fastest rate on being heated with sulfuric acid? a) 1-Butanol b)2-Methyl-1-butanol c)2-Methyl-2-butanol d)3-Methyl-1-butanol e)3-Methyl-2-butanol
If the heat released during condensation goes only toward heating the metal, what is the final temperature (in degree celcius) of the metal block? (The specific heat capacity of aluminum is 0.903 J/g times degree celsius)
when 0.500 l of a 1.00 m solution of Pb( NO3) 2 is mixed with 0.500 l of a 1.00 m solution of Kl how many grams of lead(II) iodide are formed
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