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a particle moving 30,816 km/hr has a wavelength of 725 nm. What is the mass of the particle?
A mixture of gases containing 21.0 g of N2, 106.5 g of Cl2, and 12.0 g of He at 14 oC is in a 50.0 L container. What is the partial pressure of N2?
Calcium fluoride, CaF2, is a source of fluorine and is used to fluoridate drinking water. Calculate its molar mass to four significant figures.
If 4.00 mol of calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2), a gas used in welding, will be produced.
O2(g) + 4 HCl(g) → 2 H2O(l) + 2 Cl2(g) When 64.5 g of HCl are allowed to react with 17.6 g of O2, what is the theoretical yield of Cl2(g) in this reaction.
Determine how many grams of Oxygen(O2) would be used when 10.82 Litres Nitric oxide (NO(g) is formed at the temperature of 19.82 degree Celsius and pressure of 1.092 atm?
A 80.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 40.0 mL of KOH.
Two students measure the density of gold. One works with a 100-g bar of pure gold. The other works with a 200-g bar of pure gold. Which student measures the larger density.
Determine the delta G standard state at 298 K from the following standard state values at T= 298, Determine the delta G standard state at 1000K. assume delta H is independent of temperature
Draw the structures of salicylic acid and aspirin. Circle and identify the functional groups present in each compound and sulfuric acid is a catalyst. What does that mean?
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
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.
The heat of solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 23.5°C, what is the minimum temperature reached by the solution.
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