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The freezing point of mercury is -38.8. Explain what quantity of energy, in joules, is released to the surroundings if 1.00mL mercury is cooled from 23.0? To -38.8? And then frozen to a solid? Explain the density of liquid mercury is 13.6 g/cm3. Its specific heat capacity is 0.140J/(g*K) and its heat of fusion is 11.4J/g.)
A chemist spots an unknown sample on a TLC plate and develops it in dichloromethane solvent. Only one sport, for which the Rf value is 0.95, is observed. Does this indicate that the unknown material is a pure compound. what can be done to verify t..
What is the wavelength of light required to induce a transition from the ground state to the first excited state?
Determine what volume of 1.0 mol/L solution of Copper monosulfide can be made from 23.9 grams of Copper monosulfide?
The Environmental Protection Agency has estimated that 119 tons of mercury are currently emitted to Earth's atmosphere annually due to human activities
1)When CH4(g) reacts with H2O(g) to form H2(g) and CO(g), 206 kJ of energy are absorbed for each mole of CH4(g) that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
When power was turned off to a 30.0 gal. water heater, the temperature of the water dropped from 75.0°C to 22.5°C. How much heat was lost to the surroundings? (1 gal = 3.785 L) Assume the density of water is 1.00 g/mL.
After the addition of the water, the volume is now 480 mL. To this solution, we add 20.0 mL of 5 molar NaOH. What is the pH of the buffer now. What would be the pH after an addition of 60.0 ml of the 5.00 molar NaOH was added to the solution formed..
when methane burns it reacts with oxygen gas to produce carbon dioxide and water.what mass of carbon dioxide is
The mass of the dry gas is 872 mg. A fragment of the tank indicates that the gas is a monoatomic element. Write out the full name of the gas.
Which of the following would be expected to have the lowest freezing temperature?
The total Calories for 2 tablespoons of crunchy peanut butter that contains 6 of carbohydrate, 16 of fat, and 7 of protein
Based on the formulas of the following solutes, which compound would have the largest van't Hoff factor (i)
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