PART ONE: Multiple Choice (2 points each) Write the letter of the best answer in

Question

PART ONE: Multiple Choice (2 points each) Write the letter of the best answer in the space provided. What is the cxidation number of S in the bisuitite ion, HSO, 12 b. +5 C +6 2 For which of the following reactions would you predict work to 3 For each of the following substances, 0.1 mole is added to 100mL, deionized water Which causes a light bulb to bun dimly but not brightly? b. HCI 4 Two metals of equal mass with different specific heats are subjected to the same mount of heat. Which undergoes the LARGEST change in temperature? a. The metal with the higher specific heat b. Both undergo the same change in temperature c. You need to know the initial temperatures of the metals d. You need to know which metals you have. e The metal with the lower specific heat 5 What is the change in internal energy (AE) of a system when 5.00 x10 J of work is done by the system while it releases 10.0 kJ of energy to the a. -150kJ b -10.0k d. +5010 J e. +4990 J c +15.0ku

Explanation / Answer

1)

Oxidation number of H = +1

Oxidation number of O = -2

lets the oxidation number of S be x

we have below equation to be used:

1* oxidation number (H) + 3* oxidation number (O) + 1* oxidation number (S) = net charge

1*(+1)+3*(-2)+1* x = -1

-5 + 1 * x = -1

x = 4

So oxidation number of S = +4

Answer: a

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