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3 years ago

Complete the following radioactive decay problem.222 86 RN to 4 2 HE + ?

Chemistry

1 answer:

Andreas93 [3]3 years ago

8 0

Answer:

₈₆²²²Rn → ₈₄Po²¹⁸ + H₂⁴

Explanation:

The given nuclear reaction shows alpha decay.

₈₆²²²Rn → ₈₄Po²¹⁸ + H₂⁴

Properties of alpha radiations:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4 and atomic number less than 2 as compared to parent atom the starting atom.

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸ → ₉₀Th²³⁴ + ₂He⁴ + energy

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In the redox fueling reaction, succinate + nad ↔ fumarate + nadph, the succinate molecule is undergoing which process?

GarryVolchara [31]

The answer is oxidation.

That is in the redox fueling reaction,

succinate + NAD ↔fumarate + NADPH, the succinate molecule is undergoing oxidation.

As succinate molecule is providing electrons to NAD, so that it can be reduced from NAD to NADPH. So it is losing electrons and undergoing oxidation.

So the answer is oxidation.

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3 years ago

A chemist dissolves 484 .mg of pure perchloric acid in enough water to make up 240.mL of solution. Calculate the pH of the solut

sdas [7]

Answer:

1.70

Explanation:

The molar mass of perchloric acid is 100.46 g/mol. The moles corresponding to 484 mg (0.484 g) are:

0.484 g × (1 mol/100.46 g) = 4.82 × 10⁻³ mol

4.82 × 10⁻³ moles are dissolved in 240 mL (0.240 L) of solution. The molar concentration of perchloric acid is:

4.82 × 10⁻³ mol/0.240 L = 0.0201 M

Perchloric acid is a strong monoprotic acid, that is, it dissociates completely, so [H⁺] = 0.0201 M.

The pH is:

pH = -log [H⁺] = -log 0.0201 = 1.70

8 0

2 years ago

Order frome largest to smallest <br>Allele,<br>Chromosome,<br>DNA, <br>nucleus of a cell

svetlana [45]

Allele, dna, chromosome, nucleus of a cell

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2 years ago

How do I determine the number of atoms in 30.0 g of K

Alika [10]

The number of atoms in 30.0 g of K would be 4.632 x $10^{23}$ atoms.

<h3>Avogadro's number</h3>

1 mole of a substance contains 6.022 x $10^{23}$ atoms.

Mole of 30.0 g of K potassium = 30/39

= 0.7692 moles

Hence, 0.7692 moles of K would contain

0.7692 x 6.022 x $10^{23}$ atoms.

= 4.632 x $10^{23}$ atoms.

More on Avogadro's number can be found here: brainly.com/question/1445383

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2 years ago

The structure of melatonin incorporates two nitrogen atoms. What are the hybridization state and geometry of each nitrogen atom?

nydimaria [60]

Let us see the structure of given compound melatonin

The two nitrogen atoms appear to be sp3 hybridized but the actual hybridization of both the nitrogens in the structure is sp2 as they have to gain planar geometry so that they can participate in the resonance making the compound more stable

so answer is

sp2 hybridized

trigonal planar geometry

4 0

2 years ago

Complete the following radioactive decay problem.222 86 RN to 4 2 HE + ?​

Complete the following radioactive decay problem.222 86 RN to 4 2 HE + ?