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Calculate the bubble point pressure at 30 degree celcius for a mixture that is 50/50 mole% ethanol and water given that P1(sat)=10.46 kPa and P2(sat)= 4.24kPa assuming that the margules equation with A12=1.451 and A21=.9146 represent that nonideality in the binary and assuming O1=0
A 0.200 M solution of a weak monoprotic acid HA is found to have a pH of 3.00 at room temp. What is the ionizaiton constant of this acid?
NaHCO3 + HCl I have provided the products for you here. Can you please try to determine the reactants and then balance the full equation.
A 100ml sample of sodium bromide containde co104.62g of sodium bromide. upon evaporation, 6.280g of reside was obtained. frome this data calculate each of the folowing for the solution
explain what ( if anything) is wrong with the following student's statement: " our solution is red, so we should set the spectrophotometer to the red light range
A rectangular block has dimensions 2.9 cm 3.5 cm 10.0 cm. The mass of the block is 615.0 g. What are the volume and density of the block?
Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 143 mL of ethanol.
in the synthesis of divanillin the first step in the mechanism of this reaction involving vanillin is the formation of phenoxy radical by abstraction of the phenoic H atom
protein used as standards on an SDS- polyacrylamide gel are 0.80 and 0.41, respectively. What is the apparent mass of a protein having a mobility of 0.62 on this gel?
Initially A sample of a substance of 23.43 g weight has temperature 24.2 °C then it absorbs heat and reached to temperature 122.0 degree Celsius; calculate the specific heat of this substance if it absorbs 2167 joule heat
A 890 mL sample of NO2 gas is at STP. If the volume changes to 644 mL and the temperature changes to 20ºC, what will be the new pressure in atmospheres?
Explain what health risks may arise people use this hot water in the preparation and cooking and what is the equilibrium constant for this reaction
By Solving this problem student is able to understand how to calculate theoretical and percent yields in an experiment - determine theoretical and percent yields for this experiment.
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