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15mL of radiator liquid (water + ethylene glycol) from a car has a mass of 15.69g. Is the the density of ethylene glycol greater or less than that of water? Please explain why.
The wavelength ranges corresponding to each color of light are approximate: red, 700-620 nm; orange, 620-590 nm ; yellow , 590-570 nm; green, 570-500 nm; violet, 450-400nm. You have drawn the absorption spectra for the solution containing 5.0, 6.7..
General Chemistry The pH of a solution of NH3 and NH4Br is 8.90. What is the molarity of NH4Br if the molarity if NH3 is 0.016M
Excess aqueous Hydrochloric acid was added to a 0.415 gram sample of an alloy of aluminum and copper.the aluminum dissolved, evolving hydrogen gas, while the copper, remained inert. 436 ml of gaseous hydrogen was collected over water at 24.6 degre..
A 25 mL sample of 0.200M NH3 was titrated with 0.200M HCl. Calculate the pH at each of the following points in the titration: 0.0 mL acid added; 10.0mL acid added;20.0 mL added;25.0 mL acid added;30.0 mL acid added
What is the product in a base catalyzed aldol condensation reaction between: 2 mmols acetone and 8 mmols benzaldehyde? 2 mmols acetone and 8 mmols 4-methylbenzaldehyde
Calculate the systematic treatment of equilibrium. Remember C2O4^2- is a weak base so you must consider other equilibria. (Ksp(ZnC2O4)=7.5X10^-9, Kb1=1.8X10^-10, Kb2=1.8X10^-13). Solve using systematic treatment of equilibrium.
Consider hte boiling of a liquid such as water in a frictionless piston and cylinder device computer the work obtained from the psiton when 1 kg of liquid water is vaporized to steam at 100 degrees C
The rate constant for the second order reaction 2NO2 ® N2O4 is 2.79 L/mol ·min at 48 oC. If the initial concentration of NO2 is 1.05 M , what is the half-life? A) 20.5 s B) 10.3 s C) 0.341 min D) 176 s
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group, and is a(n) alkane.
Select the gas with the largest root-mean-square molecular speed at 25°C. a. NH3 b. CO c. H2 d. SF6
what is the molarity of a solution that contains 36.0g of vitamin B1 hydrochloride (molar mass = 337g/mol) in 190mL of solution?
How fast must a 143.5 baseball travel in order to have a de broglie wavelength that is equal to that of an xray photon with landa = 79.0 pm
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