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Tom [10]
3 years ago
6

What is a stable and radioactive isotopes

Chemistry
1 answer:
stiks02 [169]3 years ago
4 0
All elements with atomic numbers greater than 83 areradioisotopes<span> meaning that these elements have</span>unstable<span> nuclei and are </span>radioactive<span>. Elements with atomic numbers of 83 and less, have </span>isotopes<span> (</span>stablenucleus) and most have at least one radioisotope (unstable<span> nucleus).



</span>A Radioisotope is also an isotope<span> by nature. The </span>difference<span> is that radioisotopes are very unstable and contain high levels of nuclear energy and emit this energy in the form of nuclear radiation. Main </span>difference<span>: </span>Isotopes<span> can be </span>stable<span> or unstable, but Radioisotopes are always unstable.</span>
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Analysis of an ore of calcium shows that it contains 13.61 g calcium and 21.77 g oxygen in a 46.28-g sample. Calculate the perce
kondor19780726 [428]

Answer:

29.41% of Calcium and 47.04% of Oxygen

Explanation:

The percent composition of an atom in a molecule is defined as 100 times the ratio between the mass of the atom and the mass of the molecule.

The mass of the molecule of the problem (Ore) is 46.28g. That means the percent composition of Calcium is:

13.61g / 46.28g * 100 = 29.41% of Calcium

And percent composition of Oxygen is:

21.77g / 46.28g * 100 = 47.04% of Oxygen

5 0
3 years ago
What else is produced during the combustion of butane, C4H10?<br><br> 2C4H10 + 13O2 → <br> + 10H2O
Neko [114]
<h3>Answer:</h3>

8CO₂

<h3>Explanation:</h3>

We are given;

  • Butane, C₄H₁₀
  • Butane is a hydrocarbon in the homologous series known as alkane.

We are required to determine the other product produced in the combustion of butane apart from water.

  • We know that the complete combustion of alkane yields carbon dioxide and water.
  • Therefore, combustion of butane will yield carbon dioxide and water.
  • The balanced equation for the complete combustion of butane will be;

       2C₄H₁₀ + 13O₂ →  8CO₂ + 10H₂O

8 0
3 years ago
Read 2 more answers
Why does a solid have a definite shape and volume?
stellarik [79]

Answer:

B

Explanation:

Particles in a solid have fixed locations in a volume that does not change. Solids have a definite volume and shape because particles in a solid vibrate around fixed locations.

6 0
3 years ago
suppose you want to treat if a sample compound is ionic. you have these materials: the solid compound, a glass container, a spoo
xz_007 [3.2K]
An ionic compound is a substance that contains atoms that are bonded together through an ionic bond, where electrons are transferred from one atom to another. For the given experiment above, the material that is missing from the list is WATER or solvent. It is necessary because conduction through water will help you identify if a sample compound is ionic through its electrolytes. <span>Ionic compounds that are soluble are typically electrolytes</span>
6 0
2 years ago
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When an acid reacts with a strong base which product always forms
patriot [66]

Answer:طيزي

Explanation:

4 0
2 years ago
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