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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?
What is the wavelength (in meters) of a proton (mass = 1.673*10^-24 g) that has been accelerated to 30% of the speed of light.
An aqueous solution is made by dissolving 25.8 grams of magnesium nitrate in 395 grams of water. What is the molality of magnesium nitrate.
Consider a 53.5 g sample of H2O(g) at 117°C. What phase or phases are present when 134 kJ of energy is removed from this sample.
When 0.800 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 13C is observed.Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL.
If the heat of combustion for a specific compound is -1390.0 kJ/mol and its molar mass is 61.39 g/mol, how many grams of this compound must you burn to release 821.90 kJ of heat.
If equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams of ammonia could be produced at maximum yield.
The substance CS2 has a melting point of -110.8°C and a boiling point of 46.3°C. Its density at 20°C is 1.26 g / cm3. It is highly inflammable. a.)Name this compound.
Determine the molarity of a solution of sodium hydroxide (NaOH) if 27.9 mL of this solution combines exactly with 22.30 mL of 0.253 M
What is the pH when 100 mL of 0.1 M NH3 is titrated with 50 mL of 0.2 M HCl? pKa of NH4Br is 9.25.
Greg Nard added an equivalent of 3,4-epoxy-4-methylcyclohexanol to an ether solution of methyl magnesium bromide and then added dilute hydrochloric acid.
Calculate what will be the amount of heat, q, absorbed by the calorimeter apparatus also express your answer in kJ? (heat capacity = 2.677 x 103 J/K)
Determine what is element Y if you have a compound consists of element "Y" and H, only and know that it is 79.89% element Y by mass. Each molecule has 3.00 times as many H atoms as Y atoms?
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