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Calculate the vapor pressure at 40 °C of a solution that has 17.8 g urea, CO(NH2)2, dissolved in 300.0 mL water. The vapor pressure of pure water at 40 °C is 55.3 mmHg.
An enclosure of volume 0.398 L has a partial pressure of O2 of 3.50 10-6 torr at 30.°C. What mass of magnesium will react according to the following equation. 2 Mg(s) + O2(g) → 2 MgO(s)
question for the decomposition of solid ammonium chloride into ammonia gas and hydrogen chloride gas kp 1.1 x 10-16.
In a clean 1-liter plastic bottle, place approximately one liter of distilled water. Add to this solution a sufficient volume of 50% w/w sodium hydroxide solution (density= 1.52 g/mL) to produce an approximately 0.1M solution.
Malonic acid titrated with NaOH.,what indicator could be used to find the endpoint,If there is more than once choice, which is best
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 of carbon were burned in the presence of 75.4 of oxygen, 11.4 of oxygen remained unreacted. What mass of carbon dioxide was produced
The density of gold is 19.31 g/cm3, and the density of platinum is 21.43 g/cm3. If equal masses of gold and platinum are transferred to equal volumes of water in seperate graduated cylinders
calculate the change in enthalpy and entropy of 50g of liquid water starting at 10 degrees celsius and completely
What is the half-life (in years) of 44Ti if a 1.0 ng sample decays initially at a rate of 4.8*10^3 disintegration s/s
Provide a chemical equation for a reaction that could be used to form each ether, and provide reaction conditions that can be used to remove each protecting group.
The burning of a piece of paper in air (to produce CO2 and H2O vapor) is a spontanous reaction exothermic reaction. What would be necessary to start this reaction
A student performing a lab experiment obtained 2.120 g of alum for .480 g of Al metal. a. calculate theoretical yield. calculate percentage yield
ausing concepts of molecular velocity and collisions of molecules explain the relationship between pressure amp volume
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