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You purchased a 5.00 pound bag of sugar (sucrose, C12H22O11) at the grocery last week to bake cookies. Conversion: 1 pound = 1 lb = 454 grams.
a.How many grams of sucrose did you purchase?
b.Calculate the formula weight of sucrose.
c.How many moles of sucrose did you purchase?
d.In a separate shopping trip you bought a container of sucrose that contained 1.76 x 1024 sucrose molecules. How many grams of sucrose did you purchase?
if an athlete expends 1850KJ/h (kilojoules per hour), how long does he have to exercise to work off 1.0lb of body fat?
What is the final temperature of the water and pieces of metal?
Problem- Another common electrode is called the calomel electrode which is given by the following equation and has an E(not)cell=.268 V, H2(g, 1 bar) + Hg2Cl2 = 2H+(aq) + 2Cl-(aq 1 M) + 2Hg(l)
Problem- A 25.0-mL solution of 0.0700 M EDTA was added to a 31.0-mL sample containing an unknown concentration of V3. All V3 present formed a complex, leaving excess EDTA in solution. This solution was back-titrated with a 0.0450 M Ga3 solution un..
a mass of solid aluminum is at its melting point. what is the maximum mass of this sample that can be melted by 120 kj
1.664 g of a solid white acid are dissolved in water and completely neutralized by the addition of 45.37 mL of 0.580 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
In a voltaic cell containing two compartments one with a strip of iron Fe and with an Fe3+ solution as well as one with a strip of Aluminum, Al3+ in contact with an Al3 solution, the
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 18.0g of carbon were burned in the presence of 62.3g of oxygen, 14.3g of oxygen remained unreacted. What mass of carbon dioxide was produced
Calculate the final temperature of 32 mL of ethanol initially at 11 degrees C upon absorption of 562 J of heat.
Problem 2.2 The temperature of 1.30 mol of an ideal gas increases from 10.4 celciusto 48 .8 celcius as the gas is compressed adiabatically. Part A Calculate q for this process, assuming that .C=3R/2 Express your answer to one significant figure an..
The bottle is opened and more liquid ethanol is added. The bottle is quickly sealed again. Describe what will happen to the pressure in the bottle as a function of time.
On the basis of your data what conclusion may be made regarding the separating ablility of simple and fractional distillation? comment on how well your results compare with what might be expected using your actual data below
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