Chemistry, 19.02.2020 18:29 harris6518
Be sure to answer all parts. Electric generating plants transport large amounts of hot water through metal pipes, and oxygen dissolved in the water can cause a major corrosion problem. Hydrazine (N2H4) added to the water avoids the problem by reacting with the oxygen:N2H4(aq) + O2(g) → N2(g) + 2 H2O(l)About 4 × 107 kg of hydrazine is produced every year by reacting ammonia with sodium hypochlorite in the Raschig process:2 NH3(aq) + NaOCl(aq) → N2H4(aq) + NaCl(aq) + H2O(l) ΔH o = −151 kJ(a) If ΔH o f of NaOCl(aq) = −346 kJ/mol, find ΔH o f of N2H4(aq). kJ(b) What is the heat released when aqueous N2H4 is added to 4.00 × 103 L of plant water that is 2.50 × 10−4M O2? Enter your answer in scientific notation. × 10 kJ heat released.
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Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick
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Chemistry, 22.06.2019 07:30
The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.
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Chemistry, 22.06.2019 23:00
How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.
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Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold
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Be sure to answer all parts. Electric generating plants transport large amounts of hot water through...
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