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Silicon is the fundamental component of integrated circuits. Si has the same structure as diamond. Is Si a molecular metallic, ionic, or covalent-network solid?
Find the conditional formation constant for Ca(EDTA)2- at pH 9.00, where log Kf is 10.65 and ?Y4- is 0.041.
Iron and oxygen react to form iron(III) oxide; 4Fe(s)+3O2(g)-->2Fe2O3(s). Determine the limiting reactant in each of the following mxtures of reactants
a tree is exactly 10 m tall.a what must the total molarity of solutes if the sap rises tothe top of the tree by osmotic
The specific rate constant for the decomposition of NO2 is 0.755 M-1s-1 at 330 degrees Celsius and 4.02 M-1s-1 at 378 degrees Celsius. Explain what is the activation energy for the reaction
write an equation that represents the reaction of 2% ethanolic PBP solution with 4- methlycyclohexene and name
volatile solute was dissolved in 40.0 grams of CCl4. The boiling point of the CCl4 was raised by .357 Degrees C. Kb for CCl4 is 5.02 C/m find the molar mass of the solute.
as we know many volatile substances are present in earths atmosphere in trace amounts. the given quantities of these
Compute the weight percent of Cl in the original sample. Ferrous ammonium sulfate heahydrate 392.13 g/mol, ferrous chloride hexahydrate 234.84 g/mol, and cupferron (155.16 g/mol).
A 0.3288-g sample of a hydrocarbon was burned in air. The sample was entirely converted to 1.0562-g of carbon dioxide and 0.5046-g of water. Determine the empirical formula of this compound
A carboxylic acid favours the ion form (R-COO-) and its pH is higher than its pKa. In most membranes, the polar heads of the phospholipids align towards the middle of the membrane.
The first-order decomposition of S2O6(g) to form SO3(g), has a half-life of 1.262 x 10-3 s at 45oC. How long will it take for 40% of a 0.34 M sample to decompose at 45oC
A certain first-order reaction has a rate constant of 2.30×10-2 s^-1 at 23 C. What is the value of k at 55 C if Ea= 84.0 kj/mol
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