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Given the reaction: 4 NH3 + 5 O2 yields 4 NO + 6 H2O when 1.20 mole of ammonia reacts, the total number of moles of products formed is?
Explain Burning in pure oxygen, the hydrocarbon gas butane, C4H10, produces carbon dioxide and water. If 0.30 moles of butane are burned, define how many moles of carbon dioxide and water are formed
A student added a total of 15.00 mL of 0.5241 M HCl to 1.4881 g to of an unknown which contained CaCO3 (molar mass = 100.09 g/mol). The resulting solution required 12.21 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO..
A certain reaction has an enthalpy of change in H = 54 kJ and an activation energy of Ea=81 kJ. What is the activation energy of the reverse reaction
A 75.0 mL volume of 0.200 M NH3 (Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 13.0 mL of HNO3.
What species are present in an aqueous solution of CuSO4. (Assume that Cu2+ is six coordinate and sulfate is a non-coordinating anion).
Disulfur dichloride is produced by reacting chlorine gas with molten sulfur. What is the percent yield if 3.25 g S2Cl2 is isolated from the reaction of 5.0 g S8 and 3.75 g Cl2
What is the molecular weight of a gas if a 31.0 g sample has a pressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R= 0.0821 L atm/mol K)
According to the Balmer-Rydberg equation, transitions from n= 5 to m= 2 result in a photons of light that give rise to a spectral line with what color
Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found here.
which mixture would not be expected to be homogeneous? pentanol and hexane kbr and water acetic acid and methanol
aluminum sulfate and sodium phosphate Express your answer as a chemical equation. Identify all of the phases in your answer.
fe 2hcl fecl2 h2 a piece of metallic iron 10 moles was dissolved in concentrated hydrochloric acid. the reaction
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