What is molarity and molailty of the solution
An aqueous KNO3 solution is made using 87.6g of KNO3 diluted to a total solution volume of 1.33L. Density of the solution is 1.05 g/mol. What is its molarity of the solution? molailty of the solution? and mass percent of the solution?
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We can calculate Kb for the carbonate ion if we know the Ka values of carbonic acid(H2CO3). Is Ka1 or Ka2 of carbonic acid used to calculate Kb for the carbonate ion? Explain.
The vapor pressure of chloroform is 40.0 torr at -7.1 degree Celsius. Its enthalpy of vaporization is 29.2 kJ/mol. Calculate its normal boiling point.
During a heart attack, blood flowing to the heart muscle is interrupted by blockage of a coronary artery. How would you expect the metabolism in the heart to change
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
what is the maximum wavelength of light that can be used to exhibit the photoelectric effect with lithium metal? it requires 279.7 kJ to remove one mole of electrons from Li atoms
What is the pH of a buffer prepared by adding 0.506 mol of the weak acid HA to 0.507 mol of NaA in 2.00L of solution? The dissociation constant Ka of Ha is 5.66 x 10^-7.
Suppose you want to heat air in your house with methane (CH4). Assume your house has 275 m2 of floor area and that ceiling is 2.50 m from the floor.
The rate constant for a certain reaction is = 6.10×10?3 . If the initial reactant concentration was 0.750 , what will the concentration be after 18.0 minutes
Considering the two resonance structures of the conjugate base of saccharin, which atom (N or O) bears more of the negative charge. explain why.
You react (E)-2,7-dimethyl-4-octene with bromine, collect product, and then perform a second reaction with potassium hydroxide.
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