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Could a compound contain both ionic and covalent bonding? Does CaSO4 have both ionic and covalent?
Write a balanced (a) molecular, (b) overall ionic, and (c) net ionic equation for the reaction between an aqueous solution of phosphoric acid, H3PO4 (aq) , and an aqueous solution of sodium hydroxide. The products are sodium phosphate and water
Estimate the temperature and pressure where 1.0 mole of O2 will correspond to 1.0 mole of N2 at 3.0 atm and 10 degrees Celsius.
A hiker caught in a thunderstorm loses heat when her clothing becomes wet. She is packing emergency rations that, if completely metabolized, will release 30 kJ of heat per gram of rations consumed.
1.45 g sample of an iron ore is dissolved in acid and the iron obtained is fe2 aq. to titrate the solution 21.6 ml of
A mixture is expected to contain 9.2 x 10-4 M SO42- and 1.6 x 10-3 M C2O42-. If the Ksp values for BaSO4 and BaC2O4 are 1.1 x 10-10 and 1.0 x 10-6, respectively, determine if Ba2+ can be added to precipitate 99% of the SO4 2- from the solution wit..
For the Reaction CO(g) + Cl2(g) -> COCl2(g), the rate constant increases 1500 times when the temperature rises from 150C to 250C. Calculate the activation energy, in kJ/mol, for this reaction. Assume frequency factor is constant for both temperatu..
The rate law of a given reaction is rate=k[reactant]^2, with k=2.64 x 10^-4 M-1min-1. If the initial concentration is 0.0250 M, what is the initial rate?
If 2.00 g of Mg reacts completely with 50.0 mL of HCI solution, what is the molarity of the HCI solution?
Write the reaction which occurs when BH3 encounters water. Hint: a gas is evolved and boric acid is formed. How does acetone react with BH3?
Identify all of the spectator ions in the precipitation reaction below. Ca^2+ (aq) + 2Br^-(aq) + 2Li^+ (aq) + CO3^2- (aq) arrow to CaCO3 (s) + 2Li^+ (aq) + 2Br^- (aq)
Calculate the entropy change for the vaporization of liquid methane and liquid hexane using the following data, Methane CH4 -- Boiling point= 112K Delta H(vap) = 8.20kJ/mol
How much heat in kilojoules is evolved or absorbed in the reaction of 244.0g of calcium oxide with enough carbon to produce calcium carbide?
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