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When we made small dry ice bombs to blow up pumpkins, we were making use of these unique behaviors. Dry ice is solid carbon dioxide with a temperature of - 109°F. Applying energy to dry ice causes the molecules to phase change straight from a solid to a gas, sublimation. When gas particles hit the walls of a container, they exert pressure. As we apply energy to dry ice, the gas molecules move faster which makes them smash into the container walls more often and with more force. The more they smash, the greater the pressure. If these smashing molecules are in a confined space/volume, dry ice bomb and pumpkin shards.
What unknown compound will result in a positive reaction to bromine only by UV light and will this compound have a negative reaction to KMnO4?
How much would an empty volumetric flask, (weighing 27.16 grams, has a volume of 100.4 cm3 ) weigh when filled with bromine, an element that has a density of 3.1028 g/cm3.
A 29.0-g sample of water at 260. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A hydrocarbon undergoes complete combustion to form 6.9 g CO2 and 2.8 g H2O. What is the empirical formula for the hydrocarbon?
Thermal decomposition of 5.00 metric tons of limestone to lime and carbon dioxide requires 9.00 x 10^6 kJ of heat.
Which is the limiting reagent in the reaction between Copper sulfate pentahydrate and ammonia?
At 25°C, 1.0 g of caffeine is dissolve into 47 ml of water, 18 ml of dichloromethane, into 86 ml of benzene, or into 270 ml of diethyl ether. Which solvent would provide the largest extraction coefficient (KD). Briefly explain.
What is the boiling point of a solution of 8.69 g of the electrolyte sodium acetate, NaCH3COO, dissolved in 15.00 g of water?
modern seawater is 0% while the average value of the polar ice cap is -45%. The ice cap holds 2wt% of the oceanic water. Calculate the delta 18 O value of an ice-free ocean.
degrees lower than the true freezing pont, would the calculated molar mass of the solute be too high or too low? Explain.
A woman requires taking ibuprofen twice daily in 625mg amount. Each pill in the bottle is 250 mg then determine the number of pills the woman requires to consume each time she needs 625mg dosage
A hot-air balloon has a volume of 875 L. What is the original temperature of the balloon if its volume changes to 955 L when heated to 56 degrees celcius
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