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An empty 100-mL measuring cylinder weighs 132.456 g. When filled with rice to the 100-mL mark it weighs 220.345 g. After water has been added to fill the spaces between the grains, the weight is 250.123 g. What is the density of the rice in g mL-1?
A a 7.50 L container holds a mixture of 2 gases at 21'C. The partial pressure of Gas A and Gas B, respectively, are 0.353 atm and .620 atm. If 0.250 mol of a third gas is added with no change in volume or temperature, what will total pressure beco..
Complete and balance the equation for this reaction in basic solution. Phases are optional.
A sample of gas at 310 Kelvin and 1.2 atmospheres has a density of 2.78 g/L, what is the molar mass of this gas? Show all of the work used to solve this problem.
About 42% of the 2.26 x 109 acres of U.S. land is used for crops and livestock. How many acres of land are for other purposes
Is caffeine a stronger acid or a stronger base than amides. Is caffeine a stronger acid or a stronger base than water. And why.
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added
If the car decelerates at rate g, what is the normal force on the front wheels and on the rear wheels?
At MIT, there is a winter-time student tradition of taking a large quantity (1 kg) of sodium metal and tossing it into the Charles river, where it explodes, gets tossed back into the air, falls again and explodes etc. over and over again until all..
suppose that 1.02 of rubbing alcohol evaporates from a 75.0 aluminum block. if the aluminum block is initially at 25c
silver iodide in grams will dissolve in a solution that is a 2.0 x 10^-4 M silver nitrate when the system reaches equilibrium
The balanced reaction has a -2217 kJ. If a steak must absorb 7.2 * 10^-4 kJ to reach a perfect medium rare and only 15% of the heat produced by the barbeque is actually absorbed by the steak, what mass of H2O is emitted into the atmosphere when th..
A solution contains .294 M solution sodium cyanide and .0919 M hydrocyanic acid. What is the pH of this solution.
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