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otez555 [7]
3 years ago
15

Generally, when going from left to right across a period on the periodic table:

Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
6 0
Atomic radio increases as number of valence electrons increase. Hence the first and fourth statement are wrong. Electronegativity is highest for elements on the TOP right hand corner of the periodic table so the third statement is wrong. Hence the answer is the third statement
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Calcium chloride contains only calcium and chloride. What is the formula for this compound?
nataly862011 [7]
Calcium chloride contains only one calcium and 2 chloride atom thus it's ionic formula would be CaCl2.
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3 years ago
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If 4.70 L of CO2 gas at 22 ∘C at 789 mmHg is used, what is the final volume, in liters, of the gas at 37 ∘C and a pressure of 75
lutik1710 [3]

Answer:

Final Volume = 5.18 Liters

Explanation:

Initial Condition:

P1 = 789 mm Hg x (1/760) atm /mm Hg = 1.038 atm

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Final Condition:

P2 = 755 mm Hg x (1/760) atm /mm Hg = 0.99 atm

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Since, (P1 x V1) / T1 =  (P2 x V2) / T2,

Therefore,

⇒ (1.038)(4.7) / 295 = (0.99)(V2) / 310

⇒ V2 = 5.18 L (Final Volume)

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3 years ago
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irina [24]

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2 years ago
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