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A 0.286 mol sample of a mixture of nitrogen and carbon dioxide with a total pressure of 802. torr is exposed to solid calcium oxide which reacts with carbon dioxide to form solid calcium carbonate. Presume the reaction goes to completion. After reaction was complete, the pressure of the gas had dropped to 348. torr. Explain how many moles of CO2 were in the original mixture? Assume no change in volume or temperature.
Small air bubbles in the salt bridge may not be a problem. How can the presence of air bubbles in the salt bridge alter the effectiveness of this salt bridge
Picric acid has been used in the leather industry and din etching copper. However, its laboratory use has been restricted bycause it dehydrates on standing and can become shock sensitive. It has an acid dissociation constant of .42. What is the [H..
Using tabulated data, and the fact that the boiling point of mercury is 337.7C, calculate S for mercury vapor.
Draw the condensed structural formula of benzyl acetate and circle the acetic acid part and the phenol part
Gaseous oxygen is held in 2 separate containers at identical temperature and pressure. The volume of container A is 7.92 L and it contains 0.209 mol of the gas. The volume of container B is 2.45 L. How many moles of the gas are in container B
The methylamine hydrochloride dissociates completely in water to form methylammonium ion (CH3NH3+) and chloride ion.
nitrogen and oxygen from an extensive series of oxides with the general formula nxoy. what is the empirical formula for
Considering that Xenon has eight valence electrons, how can something like XeF4 exist? Explain your answer by illustrating what occurs.
what is the ph of a solution created by mixing 368.0 ml of 0.175 m hydrochloric acid hcl with 231.0 ml of 0.318 m
a) Subtract blank value (0.2 mV) from each measured signal. Make graph to find volume % of C2H2 in unknown b) Use method of least squares to find uncertainties in slope & intercept of your graph & estimate the uncertainty in answer to a.
the simplest formula of a substance is found to be ch2o and its approximate molar mass is found by experiment to be
Protein Quatification IS your spectrophotometer accurate? In other words,is the absorbance response it gives to your at A280 correct?
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