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Calculate the mass of sodium azide (NaN3) needed in theair bag decomposition reaction in order to inflate a 55 literairbag at standard pressure and 20 degrees celsius.
The flask is opened and more gas is added to the flask. The new pressure is 795 mm Hg and the temperature is now 26 °C. How many mol of gas are in the flask?
the alkyl halide used in the reaction is a primary alkyl halide, and why alkylation does not work at all if a tertiary alkyl halide is used.
A standard addition procedure is used to determine the concentration of F- (in ppb) in a water sample. To four 6.00 mL aliquots of a water sample were added 0.00 mL, 1.50 mL, 2.50 mL, and 3.50 mL of a standard NaF solution containing 12.0 ppb
1. What is the ph of a solution that results from adding 250 ml of .50 m naoh to 750 ml of .50 m hf? 2. What is the ph of a buffer composed of .035 m h2po4 and .65 m hpo4?
how many grams of sodium lactate should be added to 1.00 l of 0.150 lactic acid or to form a buffer solution with
A student dissolves 0.2975 g of the unknown weak acid to give 100. mL solution. S/he obtains the following titration curve for his/her best titration. At the equivalence point, 19.0 mL of 0.1000 M NaOH was added.
a bacterial culture isolated from sewage produced 35.5 ml of methane ch4 at 31 oc and 753 mmhg. what is the volume of
question what is the magnitude and sign of the molar heat of vaporization of butane? explain using hesss law. is your
A reactant R is being consumed in a first-order reaction. What fraction of the initial R is consumed in 4.0 half-lives
Somebody puts an expandable balloon on the opening of the bottle, without any gas escaping. The outside pressure is 1.10atm and the temperature has decreased to 25.8 degree celsius. Calculate the new volume of the gas.
an effective treatment for some cancerous tumors involves irradiation with fast neutrons. the neutrons from one
Draw a molecular orbital energy level diagram and determine the bond order for each of the following
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