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Which substance below would contain a nitrogen atom with the highest oxidation number of all those shown? a. NO2 b. N2 c. NH4^1+ d. NO3^1- e. NH3
2ZnS + 3O2 = 2ZnO + 2SO2 how many moles of Zno are produces when 32 gms of oxygen is allowed to react with an excess of ZnS?
Can write the valence electron configs for the period 2 homonuclear diatomic molecules, but I don't understand the coefficients for this gerade/ungerade notation
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
What concentrations of [K2HPO4] and [KH2PO4] will you need to make the total concentration 0.50 M? 3.) How many moles of K2HPO4 and KH2PO4 will you need? 4.) What mass of K2HPO4 and KH2PO4 will you need?
How many grams of oxygen gas (O2) will it take to oxidize 1 pound of iron metal? Make sure to show the redox reaction and all work.
How much heat is absorbed in the complete reaction of 3.00 grams of SiO2 with excess carbon in the reaction below?SiO2(g) + 3 C(s) → SiC(s) + 2 CO(g) ?H for the reaction is +624.7 kJ/mol
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
The pH of a sample of rain is found to be 4.0. Calculate the percentage of HSO4- that is ionized in this sample, given that the acid dissociation constant for the second stage of ionization of H2SO4 is 1.2E-2.
The number of grams of water required to dissolve a mixture containing 15 g of KNO3 and 3.5 g CuSO4 * 5 H2), assuming that the solubility of one substance is not affected by the presence of another
Calculate the internal energy change (delta(U)) for vaporization of 100 g of CI2(l) at this temperature and 1 bar? (b) Calculate its molar entropy change (delta(S)) for vaporization at this condition.
If the heat of combustion for a specific compound is -1100.0 kJ/mol and its molar mass is 75.49 g/mol, how many grams of this compound must you burn to release 390.70 kJ of heat
What is the formula for the compound formed between iodine with a valency of (VII) and fluorine
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