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Chemistry, 04.06.2020 22:01 narnar5664
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Chloramine has the chemical formula NH CI. Nitrogen has five valence electrons, each hydrogen has one valence electron, and chlorine has
seven valence electrons. Complete the Lewis structure for this covalent compound.
N
H = 0
CI
Answers: 2
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The first element on the periodic table of elements is carbon. a. true b. false
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Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!
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Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments
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Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
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