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When 0.250 grams of a polymer were dissolved in 22.9 mL of benzene at 21.6 degrees C, the osmotic pressure was found to be 0.044 atm. Calculate the molar mass of the protein.
What amount of H2 (in moles) is needed to inflate it to 1.0 atm in an ambient temperature of 25°C at sea level? mol. What mass can the balloon lift at sea level, where the density of air is 1.22 kg m-3? kg
what is the amount of hydrogen in g in the sample? Vapor pressure of water at 20 degrees celsius is 17.5 torr.
under certain conditions, the combustion of charcoal (C) in the presence of o2 forms carbon monoxide (CO) according to the given balance equation.
Which of these sublevels may be utilized in constructing a partial orbital diagram for a period 3 element
What does the volume correction constant (b) in the van der Waals equation represent? Why is b for helium small (b = 0.0238 L /?mol) compared to b for decane (C10H22, b = 0.3043).
Which reaction responds more strongly to changes of temperature, one with an activation energy of 52 kJ mol-1 or one with an activation energy of 25 kJ mol-1
A volume of 1.86 L of H2 is trapped in a nuclear reactor at 870oC and 125 atm. What is the partial pressure (torr) of the H2 after it is released into a container vessel of 2.8 x 104 m3 at 25oC
if the reaction produces 5.72 grams of a compound called magnesium ammonium phosphate,MgNH4PO4. what is the percentage of phosphorus in the original plant food sample?
For your most exact titration, record the following: (a) Volume of NaOH solution in the burette at the start (mL): (b) Volume of NaOH solution in the burette at the end (mL):
consider the following reaction.ch3ohg cog 2 h2g h 90.7 kjcalculate e when 770.0 g of ch3ohg completely reacts at a
a chemist studying the properties of photo-nbsp graphic emulsions needed to prepare 500 mlnbsp of 0.18 m agno3 aq. what
A hot-air balloon has a volume of 875L. What is the original temperature of the balloon if its volume changes to 955L when heated to 56 degrees celsius
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