Which of the following statements is false? To protect yourself from radioactivi

Question

Which of the following statements is false? To protect yourself from radioactivity, _______ keep distance between you and the radioactivity wear proper clothing and use proper shielding work with small amounts of radioactive compound All of the above are true. In a certain nuclear reaction, 0.100 g of mass is converted to energy. How much energy was released (c = 3.0 times 10^8 m/s)? 9.0 times 10^9 kJ 9.0 times 10^17 kJ 9.0 times 10^13 kJ 3.0 times 10^4 kJ What is the approximate mass defect, in g/mol nuclei, of H-2? (H-2 atomic mass = 2.0141 amu; e mass = 5.49 times 10^-4 amu; p mass = 1.0073 amu; n mass = 1.0087 amu) 0.0019 0.0014 0.0030 0.0024 Mg(s) + Pb^2-(aq) rightarrow Mg^2-(aq) + Pb(s) For the above reaction, the cathode electrode ________; and the anode electrode ________. Must be Pb; must be Mg must be Mg; must be Pb may be an inert material; must be Mg must be Pb; may be an inert material must be Mg; may be an inert material Mg(s) + Pb^2+(aq) rightarrow Mg^2+(aq) + Pb(s) In the above galvanic cell starts at standard state conditions, ________. E increases because Q increases E decreases because Q decreases E increases because Q decreases E decreases because Q increases. Which of the following statements is true? E is 0 at equilibrium. E* does not depend on the amount of moles E* for a reaction is a constant for a given T; E is not. E depends on the concentration and T All of the above are true. Fe(s) + Cu^2+ (aq) rightarrow Cu(s) + Fe^2+ (aq) Which statement is true for the reaction? Cu^2+ is oxidized Cu^2+ is the reductant. Cu^2+ is reduced. Fe(s) is reduced. The oxidation number of Cl in KCIO is +1 -1 +3 +5 When the following redox equation is balanced (acidic conditions), what is the coefficient of the nitrate ion? 1 2 3 4 When the following redox equation is balanced (acidic conditions), what is the coefficient of the ferric ion? 1 3 5 8 Manganese has the oxidation number of +6 in MnF_6^3- MnO_4^2- Mn_2O_7 Mn(CN)_6^-

Explanation / Answer

22.

False statement: (C) work with small amount of radioactive compound.

Because, the affect of radiactive compound on human being is independent of its amount.

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