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A sealed vessel contains air at STP. It is heated to bring the air to a temperature of 80 °C. What will be the ratio of the mean free path of the air molecules at 80 °C to their mean free path at STP?
Which of the following molecules have the same geometries. A) SF4 and CH4 B) CO2 and H2O C) CO2 and BeH2 D) N2O and NO2
Problem- Unknown soda ash sample of .5097g this sample is dissolved in 25mL water. After titrating this sample using HCl the concentration of Na2CO3 was determined to be .1451M. what is the percent composition OF Na2Co3 in the soda ash sample
Gases diffuse faster compared to liquids because of the reason that the liquid molecules A. are held together by stronger inter-molecular forces.
Assume that a particular reaction evolves 250 kj of heat and that 34 kj of PV work is gained by the system. What is the enthalpy?
Explain If an orbital has a shape which is designated by having l=2, there are how several possible orientations of this orbital in space
Calculate the equilibrium constant, Ka for the acid, HA if, at equilibrium, the pH of a 2.1 M solution of HA is 3.43
After treating an antacid with 5.00 ml of .1065 M NaOH, the untreated acid was diluted to exactly 250 mL with distilled water in a volumetric flask. 25.00 mL of that diluted acid required 17.03 mL of the same NaOH solution to neutralize it. Calcul..
A voltaic cell consists of an Mn/Mn2+ half cell and a Pb/Pb2+ half cell. Calculate [Pb2+] when [Mn2+] is 2.1 M and Ecell= 0.27 V
A student needs 65g of butonic acid for a reaction. The student has 450g of a 43% in ethanol.
suppose a can contains gas at a pressure of 755 mm Hg and a temperature of 25 degrees celsius, what would be the pressure if the can was heated to 1155 degrees celsius ?
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 326 units was obtained for the intensity of the 671 nm red emission line.
Determine if Ni should dissolve easily in Cu. Show that your determination is correct by providing the Cu-rich side of the appropriate equilibrium phase diagram.
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