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krok68 [10]
3 years ago
12

Which of the following atoms will not react with water​

Chemistry
1 answer:
Sati [7]3 years ago
3 0

Answer:

Among Na ,K , Pb , Li , The atom which does not react with water is :

<u>Pb</u>

Explanation:

Li  : Reacts slowly with water

Na ,K  : Reacts vigorously with water

Pb : It does not reacts with water because :- Pb oxidize in presence of  atmospheric oxygen to form lead oxide (PbO) . this PbO form a layer over the surface of Pb and make it inert to water.

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The volume, in liters, occupied by 2.50 moles of N2 gas.<br><br><br> calculate at STP
kondaur [170]

Answer: The volume occupied by 2.50 moles of N_2 gas at STP is 56.0L

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = ?

n = number of moles = 2.50

R = gas constant =0.0821Latm/Kmol

T =temperature =273K  (at STP)

V=\frac{nRT}{P}

V=\frac{2.50mol\times 0.0821Latm/K mol\times 273K}{1atm}=56.0L

Thus the volume occupied by 2.50 moles of N_2 gas at STP is 56.0L

6 0
3 years ago
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Question 10
sveticcg [70]

False. Sarah has not achieved homeostasis.

<h3>What is homeostasis?</h3>

It is the maintenance of a relatively unchanged internal process in the body of organisms.

Since the resting heart rate for Sarah is 70 bpm, a 100 bpm is a far cry from the normal resting heart rate.

Thus, it cannot be said that Sarah has achieved homeostasis.

More on homeostasis can be found here: brainly.com/question/3888340

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3 0
2 years ago
What is the maximum number of covalent bonds a carbon atom can form with other atoms?
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(C.) Each carbon atom in ethane forms 4
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What will happen to the equilibrium between carbonic acid and bicarbonate if I add a strong base to this system?
Helen [10]

Answer:

The equilibrium will shift in forward direction.

Explanation:

The equilibrium between the carbonic acid and bicarbonate ion is shown below as:

H₂CO₃ (aq) ⇔ H⁺(aq) + HCO₃²⁻(aq)

According to Le Chatelier's Principle, the change in any state of the equilibrium say temperature, volume, pressure, or the concentration, the equilibrium will oppose these changes and will shift in such a way that the effect cause must be nullified.

<u>If a strong base is added to the equilibrium, the base will accept hydrogen ions which are formed in the right side of the equilibrium. Thus, there will be less hydrogen ions present and to compensate this effect, the equilibrium will shift in forward direction.</u>

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3 years ago
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