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if the rate constant for the 1st order decomposition of N2O5 to NO2 and O2 is 7.48 x 10^ -3 (0.00748) per second , find the time required for the total pressure in the system containing N2O5 at an initial pressure of 0.1 atmospheres to raise to 0.145 atmosphere
a 250ml solution of NaOH has 20g of solute. what is the concentration in moles per litre? what is the concentration of each ion?
Calculate the masses of the solid you must measure out to prepare 100mL EACH OF 0.025 M KNO3 , 0.025 M CuSO4, 0.025 M Ca(NO3)2, and 0.025 M KCl . include waters of hydration when clculating the formula wights.
Determine the Kelvin temperature required for 0.0470mol of gas to fill a balloon to 1.20L under 0.988atm pressure.
Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite
A high pressure natural gas tank is at 3600 psi. The tank contains 4.98 mol of methane (CH4) and 0.66 mol of ethane (C2H6). What is the partial pressure
What is the oxidation number of chlorine atom in Clo- c)What is the oxidation number of manganese in MnO2
Species A and B were separated using column chromatography. The elution time for species A (tA) was 200 s with a peak width (wA) of 35 s and the elution time for species B (tB) was 321 s with a peak width (wB) of 35 s.
Write balanced, net ionic equations when the following compounds are mixed. Indicated mixtures where no reaction is expected with the notation no rxn.
Acetylene, C2H2, can be converted to ethane, C2H6, by a processknown as hydrogenation. The reaction is
When 414 J of heat is added to the gas, it expands and does 104 J of work on the surroundings. What is the value of delta H?
If 3.25ml of vinegar needs 40.0 of 0.130M NaOh to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.30qt sample of this vinegar.
Liquid acetone was placed in a 3.00L flask, then vaporized at 95'C and 1.02 atm. The vapor filling the flask weighed 5.87g. Calculate the molar mass of acetone.
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