A few chemistry questions? c:
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A few chemistry questions? c:

[From: ] [author: ] [Date: 13-01-21] [Hit: ]
2K(s) + ZnCl2(aq) →Clearly you dont have to answer all of these, but help would be nice. x) Its a homework assignment of 65 questions. I got all of them except for these. :p Thanks~! ^^-1.......

16. Use the activity series to determine if the following reaction is possible. If it is possible, write the products and balance the equation. If not, explain.2K(s) + ZnCl2(aq) →

Clearly you don't have to answer all of these, but help would be nice. x) It's a homework assignment of 65 questions. I got all of them except for these. :p Thanks~! ^^

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1. 2 moles of Sodium Iodide reacting with Chlorine gas yields 2 moles of Sodium Iodide and Iodine gas.

2. Mg + O ----> MgO

3. CaCO3 -----> CaO + CO2

4. Decomposition

5. Single Displacement

6. Synthesis

7. Double Displacement (Acid + Base= ALWAYS Double Displacement!!!)

8. 2AgNO3 + CuCl2 ----> 2AgCl + Cu(NO3)2

9. 2PbO2 ----> 2PbO + O2

10. Zn(OH)2 + 2CH3COOH ----> Zn(CH3COO)2 + 2H2O

12. It violates the law because the numbers of atoms in each element on the products and reactants sides are different. There are 2 atoms of Oxygen on the reactants side and 4 atoms of Oxygen on the products side. (matter is being created). There are 2 atoms of Sulfur on the reactants side and 1 atom of sulfur on the products side (matter is being destroyed).

Second part of this question: Simply balance the equation so that the number of atoms on each side match up ----> 3O2(g) + CS2(l) ----> CO2(g) + 2SO2(g)

13. Fe + 2Cu2NO3 ----> Fe(NO3)2 + 4Cu

14. Double Displacement; 2KBr(aq) + Mg(OH)2(aq) ----> 2KOH(aq) + MgBr2(aq)

15. Yes; it is possible, 4Cr(s) + 3O2(g) -->2Cr2O3

16. Yes; it is possible, 2K(s) + ZnCl2(aq) ----> 2KCl + Zn

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2: Mg + O (arrow here) MgO
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