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3 years ago

What does the peak of a probability curve for an electron in an atom indicate?

Chemistry

2 answers:

Akimi4 [234]3 years ago

7 0

The options for the given question are given below.

a) the location where there is zero probability of finding the electron

b) that the electron’s location can be precisely determined

c) that Heisenberg’s uncertainty principle is violated

d) the distance from the nucleus at which the electron is most likely to be found

Answer : The correct option is d "the distance from the nucleus at which the electron is most likely to be found"

Explanation :

The probability distribution curve is the plot of density function ( represented by y axis) vs the distance of electron from the nucleus ( represented by x axis).

The peak of the curve shows the maximum density of finding an electron. The corresponding value on x axis therefore represents the distance at which this maximum density can be located.

Therefore we can say that the peak of a probability curve for an electron in an atom indicate the distance from the nucleus at which the electron is most likely to be found.

Eduardwww [97]3 years ago

3 0

The distance from the nucleus at which the electron is most likely to be found

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D. the activation energy is the displacement of energy needed for the reaction, so the distance underneath the maximum point

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3 years ago

Sodium hydrogen carbonate , also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid ind

Yanka [14]

Answer:

The mass of NaHCO3 that she would need to ingest to neutralize this much HCl is 1.512g

Explanation:

The question can be better presented as follows:

Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid HCl, which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO3 neutralizes excess HCl through this reaction: HCl(aq)+NaHCO3(aq)→NaCl(aq)+H2O(l)+CO2(g)

The CO2 gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a woman suffering from indigestion can be considered to be 200.mL of a 0.089M HCl solution. What mass of NaHCO3 would she need to ingest to neutralize this much HCl? Be sure your answer has the correct number of significant digits.

SOLUTION

Given:

Volume of HCl = 200ml = 0.200L

Molarity of the HCl =>0.089M

The number of mole of HCl can be calculated using C=n/V

Therefore n = CxV = 0.089 × 0.2

=0.018 moles

Equation for the reaction:

HCl(aq)+NaHCO3(aq)→NaCl(aq)+H2O(l)+CO2(g)

From the equation, 1mole of HCl required 1mole of NaHCO3 for neutralization; therefore 0.018 moles of HCl will require 0.018 moles of NaHCO3.

But molar mass of NaHCO3 = 23+1+12+(16×3) = 84

Finally using number of moles = mass/molar mass

Therefore mass = 0.018 × 84

= 1.512g

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3 years ago

How many valence electrons are in a silicon atom?

vladimir1956 [14]

Four valence electron

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3 years ago

Which statements are true? Check all that apply. Check all that apply. The higher the temperature, the more soluble most ionic s

snow_lady [41]

Answer:

The higher the temperature, the more soluble most ionic solids are in water

As you cool a saturated solution from high temperature to low temperature, solids start to crystallize out of solution if you achieve a supersaturated solution.

If you raise the temperature of a saturated solution, you can (usually) add more solute and make the solution even more concentrated.

Explanation:

For many ionic solids, solubility in water increases with increase in the temperature of the solution.

This implies that increasing the temperature allow more solute to dissolve in the solvent, supersaturation may be achieved by so doing. As the solution is cooled, the solid crystalizes out of solution hence the answers above.

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