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A typical single drop of liquid water has a volume of approximately 0.05 mL. Assuming the density of liquid water is 1.0 g/mL, how many moles of water are in one drop of liquid, and what volume would this amount of water occupy when vaporized at 100 degrees Celsius and 1 atm?
a solution is made by dissolving 10.20 grams of glucose c6h12o6 in 355 grams of water. what is the freezing-point
Consider the combustion of glucose (C6H12O6). This reaction is 1. spontaneous at all temperatures 2. non-spontaneous towards lower temperatures 3. non-spontaneous at all temperatures 4. spontaneous towards higher temperatures
The heat of vaporization of water is 9.72 Kcal/mol. How much heat (in kilocalories) is required to vaporize 2.70 mol of H2O and how much heat (in kilocalories) is released when 440 grams of steam condenses
The pH would decrease slightly. The pH would decrease dramatically. The pH would increase slightly. The pH would increase dramatically. The pH would not change at all.
When 2.25 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 11.00oC was obtained for ?T. Calculate the molarity of the sodium hydroxide solution. _______ Calculate the value (calories) for the heat of solution of 2.25 g of..
What is the hybridization of the nitrogen atom in sulfathiazole, and assuming the sulfur atom is sp2 hybridized how many electrons are there in the sulfathiazole ring
If a tube contains 4.0 oz of sunscreen, how many kilograms of benzyle salicylate are needed to manufacture 325 tubes of sunscreen?
Twenty-five milliliters of liquid nitrogen (density = 0.807g/mL ) is poured into a cylindrical container with a radius of 11.9cm and a length of 17.2cm . The container initially contains only air at a pressure of 760.0mmHG (atmospheric pressure) a..
A solution of 350mg of optically active 2-butanol in 10 mL of water, placed in a 20 cm cell shows an optical rotation of +6 .24 degrees. What is the specific rotation of this compound
In a fictitious lab experiment a class studied two acid base reactions and recorded the temperature change. class averages were reported 1) 30 ml of 3 molar hcl with 30 ml of 1.5 naoh change in temp was 12.2 +or - 1.3
A robust first grader goes for swimming lessons three times a week, and he enjoys it thoroughly. During the first week of December, he develops an upper respiratory infection, starts coughing continuously, and has a high fever of 39°C.
A bottle of wine contains 12.5% ethanol by volume. The density of ethanol is 0.789 g/cm3. Calculate concentration of ethanol in wine in terms of mass percent and molality.
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