What element is oxidized in the following Chemical reaction? NiO2 + Cd + 2H20 Ni(OH)2 + Cd(OH)2 What element is reduced in the following chemical reaction? Cu + 2H2SO4 →→→→→→→→CuSO4 + SO2 + 2H2O What element is oxidized in the following hemical reaction? Cu + 8HNO3 -3Cu(NO3)2 + 2NO+ 4H2O

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A: Given  calculated percent water in the unknown (greater or smaller)

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A: A solution is a mixture.

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Q: Based on your observations, which of the following reactions in the Copper Cycle were both…

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Q: Consider the following precipitation reaction: 2Na3PO4(aq)+3CuCl2(aq)→ Cu3(PO4)2(s)+6NaCl(aq) What…

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Q: What is the percent yield if 23.5 gg of ethyl chloride is actually formed?

A: Percent yield is given by the formula    Percent yield = actual yieldtheoretical yield×100

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A: The solutions given are  a) 0.10 m sodium carbonate, Na2CO3 (i = 3) b) 0.15 m calcium chloride,…

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Q: The density of aluminum is 2.70 g/mL at 20 degrees C. What volume would a piece of aluminum with a…

A: Given, At temperature 20°C. mass of aluminium (m) = 10.8 g Density of aluminium (d) = 2.70 g/mL…

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A: Weight of sample = 134.5 gm  Molar mass of MN(ClO4)4 = 452.74 g/mole

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Q: Which of the following bonds are classified as polar? B-H C-O □ O-H C-C N-H OF-F

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Q: QUESTION 10 [12] Propose mechanisms for the following reactions. (a) NH2 H. O (b) Ph-C-CI O (c)…

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Q: Given the table below, what is correct if you consider steady-state approximation? Mechanism Rate…

A: Answer : k1[A][B] + k2[A][C] = k-2[D]

Q: Calculate ∆H°f, in kcal/mol for C₂H₂(g) from the reaction 2 C2H2(g) + 5 O2(g) > 4 CO2(g) + 2 H2O(g)…

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Q: Where does the amount 299.22 g/mol from?

A: 299.22 g/mol is the molar mass of compound Pb(NO2)2 .  This is used to calculate moles from mass.

Q: A 25.5-mL sample of a 1.68 M potassium chloride solution is mixed with 14.6 mL of a 0.870 M lead(II)…

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