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omeli [17]
3 years ago
5

Which statement about the elements in the periodic table is true?

Chemistry
2 answers:
nikitadnepr [17]3 years ago
8 0

The answer is B) The reactivity of alkali metals increases as atomic mass increases. Just checked on Gradpoint and it was correct!

UNO [17]3 years ago
5 0

b) The reactivity of alkali metals increases as atomic mass increases.

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Consider a general reaction
choli [55]

Answer:

a) K = 5.3175

b) ΔG = 3.2694

Explanation:

a) ΔG° = - RT Ln K

∴ T = 25°C ≅ 298 K

∴ R = 8.314 E-3 KJ/K.mol

∴ ΔG° = - 4.140 KJ/mol

⇒ Ln K = - ( ΔG° ) / RT

⇒ Ln K = - ( -4.140 KJ/mol ) / (( 8.314 E-3 KJ/K.mol )( 298 K ))

⇒ Ln K = 1.671

⇒ K = 5.3175

b) A → B

∴ T = 37°C = 310 K

∴ [A] = 1.6 M

∴ [B] = 0.45 M

∴ K = [B] / [A]

⇒ K = (0.45 M)/(1.6 M)

⇒ K = 0.28125

⇒ Ln K = - 1.2685

∴ ΔG = - RT Ln K

⇒ ΔG = - ( 8.314 E-3 KJ/K.mol )( 310 K )( - 1.2685 )

⇒ ΔG = 3.2694

7 0
3 years ago
2. Hydrogen gas at a temperature of 22.0°C that is confined in a 5.00L cylinder exerts a pressure of 4.20atm. If the gas is rele
Umnica [9.8K]

Answer: n∗R=22+273.15/4.2∗5n

P2=n∗R∗T2/V2=n∗R∗33.6+273.15/10

Explanation:

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Which is the most likely reason why an aerosol can explodes when it is thrown into a fire?a. Heat causes the gas particles in th
LenKa [72]

I believe the correct answer is A

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Look at the periodic table. Find the element carbon. What is its symbol?
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A. ca is the answer because its short for carbon
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It true because in photosynthesis, you need celluos
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