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A gas sample containing 1.56 mol at 25°C exerts a pressure of 394 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
Since the periodic table currently has 7 periods (and will have 7 until element 119, which will be the first element of the 8th period, is "discovered"), consider the electron shell with principle quantum number, n = 7.
tripling the concentration of A increases the rate by a factor of 27, doubling the concentration of B has no effect on the rate, and tripling the concentration of C increases the rate by a factor of 3. Write down the rate law for this reaction.
a 255-mL sample of a HCl solution reacts with excess Ca to produce 14.0 L of H2 gas at STP. what is the molarity (M) of the HCl solution? Ca(s) + 2HCl(aq) > CaCl2(aq) + H2(g)
From this data, calculate the temperature at which ice is in equilibrium with liquid water.
What is the enthalpy change when 1 mole of ammonia gas is decomposed into its elements?
a 0.456 gram sample of an unknown mono protic acid lets call it hz was dissolved in some water you pick the amount.
If a drop of water clings to the outside of the foil cap and is not removed, how would the experimentally determined molecular weight be affected? Too high or too low?
Determine the mechanism for the synthesis of p-nitroacetanilide from acetanilide and HNO 3 , nitric acid and H 2 SO 4 sulfuric acid?
The equilibrium constant Kp for the reaction ; CCl4(g) C(s) + 2Cl2(g) at 700 celcius is 0.76 atm. Determine the initial pressure of carbon tetrachloride
which gas sample contains the largest number of mole?
a 45 kg person drinks 390. g of milk which has a caloric value of approximately 3.0 kjg. if only 18 of the energy in
At a certqain temperature and pressure, one liter of CO2 gas weighs 1.65 g. What is the mass of one liter of N2 gas at the same temperature and pressure
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