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When the difference in pH across the membrane of a glass electrode at 25 degrees celsius is 4.75 pH units: a) How much voltage is generated by this pH gradient
calculate the freezing point and boiling point of an aqueous solution that is .040 molality in na3po4. assume that the
A student during an extraction experiment lost track of whether a beaker contained an aqueous solution or an organic solution. How could the student determine which type of solutions was in the beaker by a simple test
If all the chloride in a 4.348 g sample of an unknown metal chloride is precipitated as AgCl with 70.90 mL of .2010 M AgNO3, what is the percentage of chloride in the sample
a solution of sodium cyanide (NaCN) has a pH of 12.10. How many grams of NaCN are in 425 mL of solution with the same pH
If the charge calculated in the first part of this question is passed through a cell constructed of copper electrodes immersed in an acidic solution of copper sulfate (0.5 M CuSO4/0.1 M H2SO4), what mass of copper, in mg, will be deposited on the ..
Calculate the density of aluminum, having a mass of 540 g and a volume of 200 cm3. .37 g/cm3, or 2.7 g/cm3, or 27 g/cm3, or 5.4 g/cm3
Draw a Newman structure for meso-3-4-dibromolhexane. Show how to prepare 3-pentanol from ethyne
How much heat in kilojoules is required to warm 10.0g of ice, initially at -20.0^\circ C, to steam at 110^\circ C. The heat capacity of ice is 2.09 {\rm J}/{\rm g} ^\circ {\rm C} and that of steam is 1.84 {\rm J}/{\rm g} ^\circ {\rm C}.
The Kingston Steam Plant burns 14,000 tons of coal each day and generates 1010 kilowatts-hours of electricity each year (enough for 700,000 homes). Coal is primarily carbon which undergoes combustion in the following reaction
Consider the following chemical equation. SO2(g) + O2(g) ? SO3(g) If 1.30 L of sulfur dioxide gas reactions with 3.25 L of oxygen gas, what is the volume of sulfur trioxide produced. Assume all gases are at the same temperature and pressure.
how many moles of nitroglycerin were in the container originally? b) how many moles of gas(air) were in the container originally? c) how many moles of gas are in the container after the explosion?
one of the most common causes of inaccurate melting points is too rapid heating of the melting point bath. under these
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