Inorganic Chemistry Answers

How many mLs of H2 gas, collected by water displacement, are produced by the reaction of 0.500 g of Mg metal with an excess of HCl, at an atmospheric pressure of 750 torr and a temperature of 25.0 C? The vapor pressure of water at 25.0 C is 23.8 torr.

1) Hydrogen iodide 0.2 moles each of H2 and I2 into a 1litre flask. Calculate the equilibrium contact value (Kc) for the reaction when a) 0.0z
7 moles per litre eaach of H2 and I2 was present at equilibrium. B) 0.20 moles per litre each of H2 and I2 had each at the time equilibrium was established.

Calculate the percentage by mass of the element adipic acid, C6 H10 O4

oxide of element has 72.72%oxygen vapour density of chloride is 77 calculate atomic weight of that element?

Why is insulin given by injection rather than by mouth?

a strong current of trivalent gaseous boron passed through germanium crystal decreases the density of the crystal due to part replacement of germanium by boron and due to interstitial vacancies is created by missing germanium atoms. in one such experiment one gram germanium is taken an d boron atoms are found to be 150 ppm by weight when the density of germanium crystal decreases by 4%. calculate the percentage of missing vacancies due to germanium which are filled up by boron atoms.

calculat the molar concentration of ammonium-sulphate (NH4)2SO4 (molar mass 132.14 g/mol) in a solution if the sulphur concentration are found to be 10.0 microgram/gram.

(f) (3 pts) Suppose you performed a distillation of a solution containing 1-pentanol (C5H12O), 2-pentanol (C5H12O), 3-pentanol (C5H12O), and methyl alcohol (CH4O). All three pentanols here have the same chemical formula, but they do have a different arrangement of their atoms (i.e. they are shaped differently), so this makes them have slightly different properties from one another. During the distillation, you collect the FIRST product that comes out, and set it aside. Then, you collect the SECOND product that comes out, and set it aside Then, you collect the THIRD product, analyze it, and determine that it has a formula mass of approximately 88 amu. What is the identity of this second product that you collected? How do you know (discuss ALL relevant data)? (HINT: You will find the table at http://www2.stetson.edu/~wgrubbs/datadriven/petermurphy/flame/table1.html very helpful when answering this question!)

the largest number of molecules is in:
a)36 gm H2o
b)28 gm CO
c)46 gm C2H2OH
d)54 gm NO5

What is the chemical formula and the correct name for the compound created out of lead nitrate and sodium oxalate?