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Calculate the density of N2 at STP a)using the ideal gas law and b) using the molar volume and molar mass of N2
How many seconds are required to produce 4.94 mg of chromium metal from an acidic solution of potassium dichromate, using a current of 0.234 A?
Calculate the expected change in temperature for 1.7 g of NH NO dissolved in 50.0 2 cal mL of H O. Assume that the calorimeter absorbs no heat. (ie. C =0)(Remember to use dimensional analysis
For an electron in a hydrogen atom, compute the most likely radius (in Angstroms) of the electron in each of the following states:
The temperature is 60 °F throughout . hey guys i already signed up for the web site you are going to send me but i couldn't find the answer
Calculate the number of moles of Cl atoms in 1.20×1024 formula~units of magnesium chloride, MgCl_2
Calculate the pH after 0.15 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.01 M KF.
A solution is prepared by dissolving 11.60 g of a mixture of sodium carbonate and sodium bicarbonate in 1.00 L of water. A 300.0- cm^3 sample of the solution is then treated with excess HNO3 and boiled to remove all the dissolved gas
Vitamin K is involved in the blood clotting mechanism. When 0.500 g is dissolved in 10.0 g of camphor, the freezing point is lowered by 4.43 °C. Calculate the molecular weight of vitamin K.
the dehydration of beta-hydroxy ketone occur so readily to produce the alkene compared with all the unsuccessful effort to dehydrate an alcohol under basic conditions?
a buffer solution was made to have 1.4M HF and 1.10 M NaF. If .1 moles of NaOH are added to 1.00 L of the buffer, what will be the pH? Assume the volume remains constant. Ka of HF = 7.2E-4.
For the setup in the above question, what is the value of Q, the reaction quotient, for this cell reaction at 25oC. 2Cr(s) + 3Br2(aq) --> 6Br-(aq) + 2Cr3+(aq)
If you dissolved 0.95g of salt in 100ml distilled water, what is the concentration of salt in this solution in g/ml
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