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The mercury level in the open to atmosphere end of the manometer was 5.25 cm lower than the hydrogen gas end. The barometer reading was 27.55 in Hg, Compute the gas pressure in torr
consider an al-cu alloy with the cu concentration ccu10at ie 10 of the atoms are cu which was processed such that cu is
Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene
Ethylene glycol, HOCH2CH2OH, is effective as an antifreeze, but it also raises the boiling temperature of automobile coolant, which helps prevent loss of coolant when the weather is hot. a. What is the freezing point of a 50.0% solution of ethylen..
A sample of a new compound is burned in an excess of air to produced CO2 and H2O. If 0.468 g of the sample produce 0.458 g of CO2 and 0.094 g of H2O and the molar mass is about 230, what is the likely molecular formula of this compound?
Explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element & explain with a sketch diagram how a hydrogen atom, which has only one electron, has so many spectral lines.
The vapor pressure of chlorine dioxide (ClO2) is 155 Torr at 22.75 C and 485 Torrat 0C. what is the standard enthalpy of vaporization?
2C8H18 + 25O2 = 16CO2+18H2O : DELTA HEAT= -10942 KJ, calculate the mass of octane that must be burned to produce 12MJ of heat
a 100.0 solution containing aqueous hcl and hbr was titrated with 0.1300 m naoh. the volume of base required to
Calculate the number of moles of hydrogen gas generated using stoichiometry. There are 3.75x 10^-4 moles of Mg. 2HCl+ Mg -->MgCl2+ H2
Produced an electrolytic cell with a DC power supply two graphite electrodes and aqueous Na2SO4 solution.
calculate the amount of the impure sample one should weigh out on the analytical balance in order to titrate 25.00 mL of a 0.1000M solution of NaOH. Use dimensional analysis.
a 31.0-g sample of water at 260. k is mixed with 48.0 g water at 320. k. calculate the final temperature of the mixture
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