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What are some examples of 7a elements? How many valence electrons do these elements have? Are these elements considered reactive? What are some practical uses of some group 7a elements?
The protein lysozyme unfolds at a transition temperature of 75.5°C and the standard enthalpy of transition is 509 kJ mol-1. Calculate the entropy of unfolding of lysozyme at 25.0°C
1. explain why adding an excess of po43- will cause a more complete precipitation of capo42.2. strontium phosphate is
When beryllium-9 is bombarded by alpha particles , carbon-12 is produced. Write an equation to show what other particle is emitted.
1. a mixture of benzoic acid and benzyl alcohol is spotted ona silica gel tlc plate and developed in
Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
Which one of the following is the highest temperature?
the bottom layer was removed, and the aqueous layers were combined. HCl (2M) was added to the aqueous layer with stirring to acidify the solution. The solid was collected by suction filtration and then air-dried. What is the overall reaction and w..
assume that you have 1 2 5 and 10 ml pipets and a 25 ml volumetric flask. describe in detail how you would prepare a
you have a 5.68 g sample of a compound with the formula xcl2 where x is a metal cation. when the sample is treated with
Trying to learn more about standard temperature and pressure. Need help with solving the following example question
Compute the pH of a solution made by mixing 5.00mL of 1.0 M sulfuric acid and 10.0mL 0.1M sodium Hydroxide.
The surface area of 100 g of glucose > than that of 1 g. give explanation why the solubility does not increase with the amount of solid deposited at the bottom of the flask?
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