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A small piece of zinc reacts with dilute HCl to form H2, at 16 degree C which is collected over the water into a large flask. The oral pressure is adjusted to barometic pressure, and the volume is 1
In the boiling water to 98.3ºC a piece of chromium metal with a mass of 24.26g is heated and then dropped into a coffee cup calorimeter which is having the 82.3 g of water 23.3ºC.
A piece of copper which is having 192 g is heated to 100º C in a boiling water bath and then dropped into a beaker which is having 751 g of water have density= 1.00g/cm^3 at 4.0ºC.
Explain how would you rate the following in increasing order of reactivity? ethyl benzoate, ethyl acetate, ethylbutyrate, ehthyl formate. Explain what hypothesis are you able to make to know which
If the unanalyzed reaction takes about 2604 years to occur, about how long will the catalyzed reaction take? The activation energy for a reaction is changed from 184 kJ/mol to59.0 kJ/mol at 600. K b
A block of copper of mass which is having 500 g and initially at 293 K is in the thermal contact with an electric heater of resistance 1.00 kQ and negligible mass.
A vat which is having 2.44 M sulfuric acid solution. Determine the numbers of kg of KOH will be needed to react totally with the 695 L of the solution?
Explain why does it bond to the C3 instead of the C2? They are both secondary carbonations and both have the same amount of hydrogens bonded to them.
A piece of stainless steel which is having the specific heat = 0.50 Jg^-1c^-1 is transferred at 23.6C^o from an oven at 191C^o into the 125 mL of water. The water temperature rises to 50.5C^o .
Determine the numbers of grams of each of the following substances will dissolve in 100 ml of the cold water? Consult your handbook. Ce (IO3)4, RaSO4, PB(NO3)2, (NH4)2SeO4
Compare the heat evolved in the combustion of sucrose (C12H22O11) at the constant pressure per mole of oxygen and plasmatic acid(C16H32O2) with the combustion of a typical protein, for which the empir
Determine the numbers of money was raised by the tax? The state of Alabama imposes a $0.52 / gallon on beer. One very hot summer in the 2009, 65,250,000 liters of beer were consumed in the Alabama.
Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with the gaseous oxygen and liquid water to form aqueous nitric acid.
Starting with solid sucrose (C12H22O11), determine how you would prepare 250mL of a 0.250M sucrose solution. Determine how you would prepare 350.0mL of 0.100MC12H22O11 starting with 3.00L of 1.50
Explain why is 1-methylcyclohexene more stable than the 3-methylcylohexene. Identify the hyper conjugation mean.
The distribution coefficient, k= concentration in ligroin / concentration in water, between ligroin and water for solute A is 7.5. Discuss what weight of A would be removed from a solution of 10g of
Calculate the change in the internal energy of the system? A system receives 174 J of heat and delivers 2,151 J of work to its surroundings.
Determine the equilibrium partial pressure of PCl5 in a 3.00 L vessel that was found to contain the .03 atm of PCl3 and .03 atm of Cl2 the equilibrium.
Determine the final temperature of the part (°C) if 290 g aluminum engine part at an initial temperature of 28.0°C absorbs the 3,189 J of heat.
Calculate the empirical formula of the oxide and write down a balanced equation for the reaction of molecular oxygen and the phosphorus on the basis of this empirical formula.
Calculate the concentration of Oxygen in the water when the oxygen is dissolved in the water with the total pressure of gas (Oxygen + water vapor) over the water being 3.20 atm. The temperature is
Determine the enthalpy of formation (ΔHo) for Na (Sodium in solid state)? Isn't it zero, because it's in its stable form? However, it looks like it's not zero. Can somebody confirm this?
A sample which is having 0.6911-g of impure strontium carbonate, SrCO3, is decomposed with the HCl. The resulting liberated CO2 is collected on the calcium oxide and weighs 0.1745 g.
Calculate the molar heat capacity of benzene at the constant pressure? It takes 330 Joules of energy to raise the temperature of 24.6g of benzene from the 21.0°Cto 28.7°C at constant pressu
3-Magnesium burns in air to form the magnesium nitride, Mg3N2 and magnesium oxide, MgO. Magnesium nitridereacts with water to give ammonia.