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Rom4ik [11]
3 years ago
9

What element has the same valence electrons as carbon A) N B) AI C) Si or D) Be

Chemistry
1 answer:
Rufina [12.5K]3 years ago
3 0

Answer:

Si

Explanation:

The outer shells of both elements have 4 electrons

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The answer is 0.188L

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2. Where can the oldest be found in this section of the ocean floor? Drag and drop an arrow to indicate this location
ira [324]

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Consider this synthesis of isoamyl acetate based on this week's experimental methods, after refluxing the reaction mixture for 2
skelet666 [1.2K]

Answer:

acetic acid and phosphoric acid

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3 years ago
The rate constant k for a certain reaction is measured at two different temperatures:
bogdanovich [222]

Answer:

Ea=5.5 Kcal/mole

Explanation:

Let rate constant are K_1  and K_2  at temperature T_1  and T_2

By using Arrhenius equation at two different two different temperature,

Log K_1/K_2 =E_a/2.303R*(1/T_2 -1/T_2 );T_1=273+376=649K  ;K_1=4.8*10^8;T_2=273+280=553K  ;K_2=2.3*10^8;R=2 cal/(mole.K);Log (4.8*10^8)/(2.3*10^8 )=E_a/2.303R*(1/553K-1/649); Log 4.8/2.3=E_a/2.303R*96/358897 ;0.32=E_a/2.303R*96/358897;E_a=(0.32*2.303R*358897)/96;  

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E_a=5510.265cal/mole;

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8 0
3 years ago
A "fizz-keeper" is a small air pump that you can place on an opened soda bottle. When operated the pump is used to pressurize th
AnnZ [28]

Answer: increase

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

As soda contains carbon dioxide dissolved in water.

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C_{CO_2}=K_H\times p_{CO_2}

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C_{CO_2} = solubility of carbon dioxide in water

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Thus on increasing the pressure, the solubility of carbon dioxide also increase.

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3 years ago
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