Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Q 7 please
Q1. What mass of Li3PO4 is needed to prepare 500 ml. of a solution having a lithium ion concentration of 0.175 M? A. 6.75 g B. 10.1 g C. 3.36 g D. 19.3 g Q2. A 47.27 g of Ca(OH)2 is dissolved in water to make 1.0 liters of solution. How many mL of this solution must be diluted with water to make 1.0 L of 0.10 M Ca(OH)2? A. 538.4 ml. B. 658 ml. Q3. Arrange the following in order of increasing first ionization energy A. Rb<Ca<S<P C. Rb< Ca<P<S C. 156.7 ml. Q4. Which pair of ions will form a precipitate (insoluble) when their solutions are mixed? A. AP³+, NO,¹ B. K¹, S² C. Na, PO¹ Q10. Which of the following is paired correctly? A. H₂SO4 nonelectrolyte C. BaCl₂ weak electrolyte B. Rb<P<Ca<S D. P<S<Ca<Rb D. Ca²+, CO₂-² Q5. Calculate the molar mass of the acid when 0.625 g sample of H₂X acid is completely neutralized with 45.2 ml. of 0.106 M NaOH. A. 246.8 g/mol B. 505.2 g/mol C. 260.9 g/mol D. 82.9 g/mol Q6. Calculate of the light emitted by a H atom if an electron falls from n=7 to n=2 principal energy level. A. 3.97 × 10² nm B. 101mm C. 445nm D. 2.16 x 10 m Q7. The electron configuration for the iodine ion (1¹) is? A. [Kr]5s²4d¹05p B. [Xe]6s² D. [Kr]4s3d¹04p D. (6. 2, -3,-1/2) C) 1s 2s 2p 3s 3p 4s² Q8. The correct set of quantum numbers (n, 1, mi, m.) for an electron in a 6f orbital is? A. (6, 2, 1, 1/2) B. (6, 3, -2, -1/2) C. (5, 2, 2, 1/2) Q9. Which one of the following is the correct order for atomic radius? (largest to smallest) A. K> F > P B.K>P>F C.F> P> K A. 14, 2, 3 D. 3.34 mL Q11. Which of the following frequencies corresponds to light with the shortest wavelength? A. 3.00 × 10¹3 S-1 B. 4.12 x 10³ s X C. 8.50 × 1020 S-¹ Q12. What are the reacting ions in the following reaction? Pb(NO3)2 + 2NaCl-PbCl₂ + 2NaNO3 B. Pb²+, C1¹ B. 7, 2, 3 B. HNO, weak electrolyte D. HCI strong electrolyte C. Pb². Na¹+ D. P> K>F Cr₂O7² (aq) +1¹(aq) → Cr+³(aq) + 12 (aq) 1 C. 6, 2, 2 A. Na¹*, NO,¹- D. Pb²+, NO3¹ Q13. When the following equation is balanced in acidic solution the coefficients for, H¹, Cr3, and Iz respectively are? D.9.12 × 1021 1 D. 14, 3, 2
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Transcribed Image Text:Q1. What mass of Li3PO4 is needed to prepare 500 ml. of a solution having a lithium ion concentration of 0.175 M? A. 6.75 g B. 10.1 g C. 3.36 g D. 19.3 g Q2. A 47.27 g of Ca(OH)2 is dissolved in water to make 1.0 liters of solution. How many mL of this solution must be diluted with water to make 1.0 L of 0.10 M Ca(OH)2? A. 538.4 ml. B. 658 ml. Q3. Arrange the following in order of increasing first ionization energy A. Rb<Ca<S<P C. Rb< Ca<P<S C. 156.7 ml. Q4. Which pair of ions will form a precipitate (insoluble) when their solutions are mixed? A. AP³+, NO,¹ B. K¹, S² C. Na, PO¹ Q10. Which of the following is paired correctly? A. H₂SO4 nonelectrolyte C. BaCl₂ weak electrolyte B. Rb<P<Ca<S D. P<S<Ca<Rb D. Ca²+, CO₂-² Q5. Calculate the molar mass of the acid when 0.625 g sample of H₂X acid is completely neutralized with 45.2 ml. of 0.106 M NaOH. A. 246.8 g/mol B. 505.2 g/mol C. 260.9 g/mol D. 82.9 g/mol Q6. Calculate of the light emitted by a H atom if an electron falls from n=7 to n=2 principal energy level. A. 3.97 × 10² nm B. 101mm C. 445nm D. 2.16 x 10 m Q7. The electron configuration for the iodine ion (1¹) is? A. [Kr]5s²4d¹05p B. [Xe]6s² D. [Kr]4s3d¹04p D. (6. 2, -3,-1/2) C) 1s 2s 2p 3s 3p 4s² Q8. The correct set of quantum numbers (n, 1, mi, m.) for an electron in a 6f orbital is? A. (6, 2, 1, 1/2) B. (6, 3, -2, -1/2) C. (5, 2, 2, 1/2) Q9. Which one of the following is the correct order for atomic radius? (largest to smallest) A. K> F > P B.K>P>F C.F> P> K A. 14, 2, 3 D. 3.34 mL Q11. Which of the following frequencies corresponds to light with the shortest wavelength? A. 3.00 × 10¹3 S-1 B. 4.12 x 10³ s X C. 8.50 × 1020 S-¹ Q12. What are the reacting ions in the following reaction? Pb(NO3)2 + 2NaCl-PbCl₂ + 2NaNO3 B. Pb²+, C1¹ B. 7, 2, 3 B. HNO, weak electrolyte D. HCI strong electrolyte C. Pb². Na¹+ D. P> K>F Cr₂O7² (aq) +1¹(aq) → Cr+³(aq) + 12 (aq) 1 C. 6, 2, 2 A. Na¹*, NO,¹- D. Pb²+, NO3¹ Q13. When the following equation is balanced in acidic solution the coefficients for, H¹, Cr3, and Iz respectively are? D.9.12 × 1021 1 D. 14, 3, 2
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