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Dmitrij [34]
3 years ago
5

What is radio isotopes?

Chemistry
2 answers:
Evgesh-ka [11]3 years ago
7 0
<span>Radioactive isotope, also called radioisotope, radionuclide, or radioactive nuclide, any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays.</span>
Julli [10]3 years ago
4 0
Any of the same chemical element with different masses whose nuclei are unstable and gets energy by emitting radiation in the form of alpha, beta, and gamma rays.
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Final volume of Argon gas:
DerKrebs [107]

Answer:

6.78 × 10⁻³ L

Explanation:

Step 1: Write the balanced equation

Mg₃N₂(s) + 3 H₂O(g) ⇒ 3 MgO(s) + 2 NH₃(g)

Step 2: Calculate the moles corresponding to 10.2 mL (0.0102 L) of H₂O(g)

At STP, 1 mole of H₂O(g) has a volume of 22.4 L.

0.0102 L × 1 mol/22.4 L = 4.55 × 10⁻⁴ mol

Step 3: Calculate the moles of NH₃(g) formed from 4.55 × 10⁻⁴ moles of H₂O(g)

The molar ratio of H₂O to NH₃ is 3:2. The moles of NH₃ produced are 2/3 × 4.55 × 10⁻⁴ mol = 3.03 × 10⁻⁴ mol.

Step 4: Calculate the volume corresponding to 3.03 × 10⁻⁴ moles of NH₃

At STP, 1 mole of NH₃(g) has a volume of 22.4 L.

3.03 × 10⁻⁴ mol × 22.4 L/mol = 6.78 × 10⁻³ L

3 0
3 years ago
Hydrogen peroxide slowly decomposes in light:
IgorLugansk [536]

Answer:

Explanation: the answer is A

3 0
3 years ago
(11 points) can y'all do science on this app just wondering?
Shalnov [3]
Of course, you can ask science questions under biology or another subject.
7 0
3 years ago
Read 2 more answers
can anyone help me in explaining the metal excess defect in Non stoichiometric defects? i fail to understand it
mars1129 [50]
<span>Non-stoichiometric defects are </span>compounds which contain the combining elements in a ratio different from that required by their stoichiometric formula. The solids with metal excess <span>defect </span>contain metal in excess to the stoichiometric ratio. Such defect is caused due to either of the following reasons:
1. <span>Metal excess Defect due to Anionic Vacancies:
     In this, </span>negative ions may be missing from their lattice sites leaving holes in which the electrons remain entrapped to maintain the electrical neutrality.
2. Metal excess defect due to the presence of extra cations at interstitial sites:
     In this case, there are extra positive ions occupying interstitial sites and the electrons in another interstitial sites to maintain electrical neutrality. The defect may be visualized as the loss of non-metal atoms which leave their electrons behind. The excess metal ions occupy interstitial positions.
8 0
3 years ago
If the atmospheric pressure on the top of a mountain is 0.2396 atm, what is the pressure in Kilopascal
arsen [322]

Answer:

24.28 kPa

Step-by-step explanation:

You want to convert atmospheres to kilopascals.

The conversion factor is 101.325 kPa = 1 atm

p = 0.2396 atm × (101.325 kPa/1 atm)

p = 24.28 kPa

4 0
3 years ago
Read 2 more answers
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