39. How many grams are in 2.3 x 1024 formula units of KNO3? (A) 38.6 grams (B) 102.3 grams (C) 140 grams (D) 386 grams 40. Which statement describes the general trends in electronegativity and first ionization energy as the elements in Period 3 are considered in order from Na to Cl? (A) Electronegativity increases, and first ionization energy decreases (B) Electronegativity decreases, and first ionization energy decreases (C) Electronegativity and first ionization energy both increase (D) Electronegativity and first ionization energy both decrease

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39. How many grams are in 2.3 x 1024 formula units of KNO3?
(A) 38.6 grams
(B) 102.3 grams
(C) 140 grams
(D) 386 grams
40. Which statement describes the general trends in electronegativity and first ionization energy as the
elements in Period 3 are considered in order from Na to Cl?
(A) Electronegativity increases, and first ionization energy decreases
(B) Electronegativity decreases, and first ionization energy decreases
(C) Electronegativity and first ionization energy both increase
(D) Electronegativity and first ionization energy both decrease
Transcribed Image Text:39. How many grams are in 2.3 x 1024 formula units of KNO3? (A) 38.6 grams (B) 102.3 grams (C) 140 grams (D) 386 grams 40. Which statement describes the general trends in electronegativity and first ionization energy as the elements in Period 3 are considered in order from Na to Cl? (A) Electronegativity increases, and first ionization energy decreases (B) Electronegativity decreases, and first ionization energy decreases (C) Electronegativity and first ionization energy both increase (D) Electronegativity and first ionization energy both decrease
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