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Tell what type of chemical reaction is represented by the following chemical equation.C3H8(g) + 5O2(g) 3CO2(g) + 4H2O(l)
Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100 mL of a 0.150-molar solution of ammonia.
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 326 units was obtained for the intensity of the 671 nm red emission line.
At 2000 degrees Celsius the equilibrium constant for the reaction 2NO (g) N2 (g) + O2 (g) is Kc=2.4x10^3 The initial concentration of NO is 0.174 M
Consider the reaction CH3Br(aq) + OH-(aq) ? CH3OH(aq) + Br-(aq). How would each of the following changes affect the rate of the forward reaction? a) addition of OH-? b) decrease in volume of the solution
Calculate the [Cr+3] in equilibrium with Cr(OH)4-(aq) when 0.010 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at a pH of 7.3. Kf for Cr(OH)4-(aq) is 8.0 x 1029.
Consider: C7H16 (l) + 11 O2 (g) → 7 CO2 (g) + 8 H2O (l) ΔH°reaction=- 4130 kJ. How much energy is released when 4.000 moles of C7H16, is combusted?
Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9041 amu. What is the atomic mass of this element?
What is the volume in mL of 0.585 M HCl(aq) needed to reach halfway to the equivalence (stoichiometric) point in the titration
The standard molar heat of vaporization for water is 40.79 kJ/mol. How much energy would be required to vaporize 29.0 g of water?Answer in units of kJ.
used in high speed centrifuges to separate the parts of a biological cell. How many liters of 3.07 M sucrose contain 245 g of solute?
The density of titanium metal is 4.51g/cm3 at 25 degrees celsius. What mass of titanium displaces 125.0mL of water at 25 degrees celsius.
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
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