When a sample of ammonium nitrate is dissolved in water, the temperature changes

Question

When a sample of ammonium nitrate is dissolved in water, the temperature changes from 25 degree C to 20 degree C. Based on this observation, which of these is true for this process? Delta H for the system is positive and the process is endothermic. Delta H for the system is positive and the process is exothermic. Delta H for the system is negative and the process is exothermic. Delta H for the system is negative and the process is endothermic. In the following reaction, what species is the oxidizing agent? 2AI(s) + 6H^+(aq) rightarrow 2 Al^3+(aq) + 3 H_2(g) A1 H^+ Al^3+ H_2 Choose the proper set of coefficients for each substance to balance this equation. C_2H_4(g) + O_2(g) rightarrow CO_2(g) + H_2O(g) 1,1, 2,2 1,3,2,2 2,3,4,2 2,2,4,2 N, N--diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellen What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below? sp sp^2 sp^3 sp^3d sp^3d^2

Explanation / Answer

17) a) dH is positive and endothermic

18) b) H+

19) b) 1,3,2,2

20) b) sp2

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.