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The volume of the box on the right is twice that of the box on the left. The boxes contain helium atoms (red) and hydrogen molecules (green) at the same temperature.
(a) Which box has a higher total pressure?
(b) Which box has a higher partial pressure of helium?
an athlete at high performance inhales 4.0l of air at 1.00 atm and 298 k at a respiration rate of 40 breaths per
A solid Silver Group (Anion) unknowon that contains only sodium ion as a catio is acidified and divided into tow portions, to both of which 6 M HC2H3O2
One mole of N2 and three moles of H2 are placed in a flask at 375 C. Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is 0.21. The Kp for the reaction is 4.31*10^4.
When mixed HCl an acid and NaOH a base will react with each other. a) Write the balanced neutrali zation equation for this reaction
What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid,
If 20 mL of 0.10 M NaOH are added to 30 mL of 0.20 M HOAc, what is the pH of the resulting solution? (Ka = 1.8 x 10-5 for HOAc)
An experiment requires 40.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
What is an intensive physical property of a material that may be used to characterize a material's ability to sink or float - Calculate the density in this way, and record the value.
The xenate ion, [XeO3(OH)]-, slowly decomposes in alkaline solution to give perxentate (XeO64-) and xenon as the only xenon-containing products.
What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 x 10-12 and respectively.
Find out the eq molar concentration of SCN- in the system.( Kc=[FeNCS2+]/[Fe3+][SCN-] =271.5)
The patient is a 48-year old male with chief complaint of chronic diarrhea and epigastic pain for the past year. He states that the diarrhea is watery and without blood, pus or mucus. He has a history of duodenal ulcer for which he takes cimetidine. ..
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