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Nat2105 [25]
3 years ago
11

If element X has 99 protons, how many electrons does it have

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

As long as it’s an atom then it would also have 99 electrons also

Tresset [83]3 years ago
3 0
99 electrons also. Protons and neutrons share the same number
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What is point group of allene?​
Fantom [35]

Allene (1,2-propadiene) has point group D2d, itself is achiral because it has two planes of symmetry. ... An allene with substituents on one terminal carbon atom are unlike and substituent on other terminal carbon atoms are same, allene will be achiral. It will have one symmetry plane.

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3 years ago
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The pH of a vinegar solution is 4.15. What is the H3O+ concentration of the solution?
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Consider the equilibrium reaction. 2 A + B − ⇀ ↽ − 4 C After multiplying the reaction by a factor of 2, what is the new equilibr
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Answer : The correct expression for equilibrium constant will be:

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Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

4A+2B\rightleftharpoons 8C

The expression of K_c will be,

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Therefore, the correct expression for equilibrium constant will be, K_c=\frac{[C]^8}{[A]^4[B]^2}

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3 years ago
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Answer:

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