Use the solubility table for KBr below to determine the following:

solubility (g KBr / 100 g

H20)

65

80

90

100

110

Temp (c)

20

40

60

80

100

is the dissolution of KBr an exothermic or endothermic process?

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What is the difference between single, double, and triple covalent bonds? How many shared electrons are in each?

Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 567 g of NaOH (s) per liter of solution. Calculate the molarity of this saturated NaOH (aq) solution

Consider the following element combinations. Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table. Ba-0, Cu-Cl, N-N, Al-N, O-F, S-F, F-F, and P-F

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Under what condition is decompostion the fastest? Under what condition is it the slowest?

Which compound has the strongest hydrogen bonding between its molecules? 1. HBr 2. HF 3. HCl 4. HI

Arrange the following bonds in order of increasing polarity: O-H, C-H, F-H, H-H A) O-H B) C-H<0-H C) H-H D) C-H E) HH

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Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho