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AfilCa [17]
1 year ago
13

For the reaction a 3b → 2c, the rate of disappearance of b given by (δ[b]/δt) may also be expressed as?

Chemistry
1 answer:
aleksandrvk [35]1 year ago
6 0

Main Answer:

Based on the given hypothetical reaction, the rate of disappearance of "B" can be determined by the following relation:

Δ[B]/Δt = -(3/2) Δ[C]/Δt

Explanation:

What is hypothetical reaction ?

Hypothetical reaction is one of the representation of the equation in which reactants and products are involved. The reactants will always lies on the left hand side of the equation and the products will always lies on the right hand side of the equation. The rate of disappearance of the reactants will result in the rate of formation of the products. At a certain stage of reaction, all the reactants and products are there, the condition is equilibrium state. If the equilibrium state shifts right, then it will lead to the formation of products. In the above equation, A and B are the reactants and C is the product.

To know more about hypothetical reaction, please visit:

brainly.com/question/2500083

#SPJ4

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3 years ago
When 38^88Sr decays to 34^84Kr, a(n) ______________ is emitted
navik [9.2K]

Answer:

The correct answer is - alpha particle and positron.

Explanation:

In this question, it is given that, 38^88Sr decays to 34^84Kr, which means there is an atomic number decrease by 4, 38 to 34, and atomic mass decreases by 4 as well 88 to 84.

A decrease in the atomic mass is possible only when there is an emission of the alpha particle as an alpha particle is made of 2 protons and 2 neutrons. If an atom emits an alpha particle, there is a change in atomic number as it decreases by two, and its mass number decreases by four.

So after the emission of an alpha particle, the new atom would be

38^88Sr=> 36^84X => 34^84Kr

so there is also two positron emission that leads to decrease in atomic number by one with each emission:

38^88Sr=> 2^4He+ 36^84X => 36^84X + 2(1^0β+) => 34^84Kr

Positron decay is the conversion of a proton into a neutron with the emission of a positron that causes the atomic number is decreased by one, which causes a change in the elemental identity of the daughter isotope.

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If the [H₃O⁺] of a solution is 1.7 x 10⁻³ M, what is the pH of the solution?
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Answer:

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Explanation:

Data obtained from the question include:

Concentration of hydronium ion, [H₃O⁺] = 1.7 x 10⁻³ M

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Therefore, the pH of the solution is 2.77

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