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Fumaric acid, which occurs in many plants, contains 41.4% C, 3.47% H, and 55.1% O by mass. A 0.5 mol sample of this compound has a mass of 58.0 g. What is the chemical formula for this compound?
If 20.0 dm3 of methane, CH4, react with 200.0 dm3 of air at STP, calculate the dm3 of carbon dioxide gas produced.
If 1.500 g of a solute having a molar mass of 125.0 g were dissolved in 35.00g of camphor, what would be the resulting freezing point of the solution.
Find the temperature and the pressure of a gas inside the cylinder - what was the initial pressure of the gas in the cylinder?
Boyle's apprentice observes that the air trapped in air tube occupies 24.8 cm3 at 1.12 atm.by adding mercury to the tube increases the pressure on the trapped air to 2.64atm. assuming constant temperature, determine the new volume of air?
Calculate the reaction quotient Qc and find out at which temperature and
A 0.440 g sample of butyric acid (an organic acid consisting of C, H, and O atoms) is combusted in excess oxygen, yielding 0.882 g CO2 and 0.360 g H2O.
Determine the mass of sodium phosphate that yields 1.00 g of calcium phosphate precipitate.
There are two naturally occurring isotopes of bromine. 79Br has a mass of 78.9183 amu. 81Br has a mass of 80.9163 amu.
Differ from the ideal pressure? The value For N 2 gas is given as , a = 1.390 L2atm/mol2 and b = 3.910E-2 L/mol.
At 0°C, the volume coefficient of expansion of mercury is α = 18×10-5 K-1, and its coefficient of compressibility is β = 5.32×10-6 bar-1.
How much heat is required to warm 227 g of ice from -44.5°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C.
What is the empirical formula of the compound if Quantitative analysis of a 5.00-g sample of a gaseous compound yielded the following results: 2.00 g sulfur and 3.00 g oxygen?
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