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Classify each of the following binary compounds by the oxidation number of hydrogen. Drag each item to the appropriate bin. H2O, HCl, MgH2, NH3, NaH, CaH2,H2,CH4 cateogories -1, 1+, 0
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
Calculate the solubility (in mol/L) of silver chloride in 2.0 M NH3 solution. How many grams of AgCl will dissolve in 500. mL of 2.0 M NH3?
in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction
A mixture consisting of 2.50×10!3 g of O2, 3.51×10!3 mol of N2, 4.67×1020 molecules of CO are placed in a vessel with a volume of 4.65 L at 15.4°C.
what is the bronsted-lowry definition of an acid ,and how does thiss affect the concentration of H+ in a solutin?
The valence shell of the element X contains 2 electrons in a 5s subshell. Below that shell, element X has a partially filled 4d subshell. What type of element is X?
What pair of elements would you expect to exhibit the greatest similarity in physical and chemical properties. WHY.
An unknown solution forms a white precipitate when treated with 6 M HCl. The precipitate is incompletely soluble in hot water but dissolves completely in NH3
When the gas is not flowing the pressure is the same everywhere in the pipe. How high above the bottom of the manometer would the mercury be in the am connected to the pipe?
Why do primary alkyl halides undergo SN2 substitution reactions more rapidly than do secondary or tertiray alkyl halides?
why does hydrochloric acid and acetic acid have the same equivalence, while hydrochloric acid and sulfuric acid
consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. If this reaction is only 83% efficient and the ferric oxide is only 87.5% pure, what mass of ferric oxide is required to make 3 moles of iron
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