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3 years ago

The period of time needed for a radioisotope to lose one-half of its activity is known as that isotopes

Chemistry

1 answer:

Kamila [148]3 years ago

6 0

Explanation:

The radioactive scattering technique is called radioactive degradation. For each radioactive isotope, the natural radioactive cycle is special and is determined by a period of time termed a half-life. One half-life was its time needed to experience radioactivity for half of both the radioactive nuclei.

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Consider the mechanism. step 1:step 2:overall:2a⟶bb c⟶d2a c⟶dslowfast determine the rate law for the overall reaction, where the

Ne4ueva [31]

Answer:

Rate: R = k [A]²

Explanation:

The rate law equation for a given complex chemical reaction is given as the product of molar concentrations of the reactant raised to the power their respective partial reaction orders. The sum of the partial reaction orders is equal to the overall order of reaction.

For a complex reaction, the rate law is generally determined by the slowest step, which is known as the rate-determining step.

Given reaction mechanism:

Step 1: 2 A⟶ B, slow step

Step 2: B+ C⟶ D, fast step

Overall: 2 A + C ⟶ D

In this given reaction mechanism, the step 1 is the slow step and thus the rate determining step.

Therefore, the rate law for the given mechanism is:

Rate: R = k [A]²

Here, k is the overall rate constant

Also, the overall order of the reaction = 2

Therefore, the given chemical reaction is said to be second order reaction.

3 0

3 years ago

How many grams of lead (ll) chloride are produced from the reaction of 25g of sodium chloride according to the balanced reaction

Natalka [10]

Answer:

The answer to your question is: 25 g of PbCl2

Explanation:

Data

NaCl = 25 g

PbCl₂ = ?

Pb(NO3)2 + 2 NaCl ⇒ PbCl2 + NaNO3

MW NaCl = 58.5 g

MW PbCl2 = 277 g

2(58.5 g) of NaCl ------------------------ 277 g of PbCl2

25 g of NaCl ------------------------ x

x = (25 x 277) / 117

x = 25 g

7 0

4 years ago

Cual es la relación de la temperatura y la solubilidad?

DanielleElmas [232]

Answer:

A medida que aumenta la temperatura de un líquido, la solubilidad de los gases en ese líquido disminuye. Podemos usar la Segunda Ley de la Termodinámica para explicar por qué. Calentar una solución de un gas permite que las partículas de gas se muevan más libremente entre la solución y la fase gaseosa. La Segunda Ley predice que cambiarán al estado más desordenado, más altamente disperso y, por lo tanto, más probablemente gaseoso.

Explanation:

8 0

3 years ago

Define the following terms: i) Rigidity ii) Compressibility and iii) Density

Nutka1998 [239]

Rigidity is the inability to bent or be force out of shape while compressibility is the ability to be flattened, pressed or squeezed into a smaller piece.
density is the degree of compactness of a substance.

3 0

3 years ago

In what way are all sound waves and light waves similar?

SashulF [63]

So sound waves, and light waves. Well they are both waves, they can be reflected/refracted.

5 0

3 years ago

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