How can we determine the atomic mass of an element which posseses isotopic forms?

Answers

Answer 1

Answer:

Answer: Here are the steps to determine the atomic mass of an element with isotopic forms:

1. Identify the isotopes: Determine the different isotopic forms of the element. Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons.

2. Determine the relative abundance: Find the relative abundance of each isotope. This information is typically given as a percentage or decimal. The relative abundance represents the proportion or percentage of each isotope in a naturally occurring sample of the element.

3. Obtain the mass of each isotope: Identify the mass of each isotope. This is usually given in atomic mass units (u) or grams per mole (g/mol).

4. Multiply the mass of each isotope by its relative abundance: Multiply the mass of each isotope by its relative abundance (expressed as a decimal). This calculates the contribution of each isotope to the overall atomic mass.

5. Sum the contributions: Add up the contributions of each isotope to obtain the atomic mass. This sum represents the weighted average of the masses of all the isotopic forms, taking into account their relative abundance.

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Of the following choices, the best conductor is _____. iron copper steel rubber

How do you draw a bohr diagram for a boron ion? Some backgorund info: (of boron atom)
Atomic no- 5
Mass no- 11
Cation

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Because Boron likes to lose 3 electrons when it undergoes ionization, we draw a boron ion like a helium atom, with just 2 electrons in the first shell, and 0 in the second

it's core charge would be +3

Explanation:

it's core charge would be +3

Explanation:

15 The electronegativity difference between the atoms in a molecule of HCl can be used to determine(1) the entropy of the atoms(2) the atomic number of the atoms
(3) the first ionization energy of the atoms
(4) the polarity of the bond between the two atoms

Answers

Answer : The correct option is, (4)

Explanation :

Electronegativity : It is a chemical property which measures the ability of an atom to attract an electrons towards itself.

Electronegativity difference : The difference in the electronegativity of the two atoms determines their polarity.

If the electronegativity difference between the two atoms is zero then the molecule is non-polar.

If the electronegativity difference between the two atoms is non-zero then the molecule is polar.

Therefore, the electronegativity difference between the atoms in a molecule of HCl can be used to determine the polarity of the bond between the two atoms

(4) the polarity of the bond between the two atoms

The more important the difference in electronegativity is, the more polarized the bond is.

Name three human activities that are changing the natural world. Why do these activities make it important to understand evolution?

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The three human activities that are changing the natural world are:
1. Deforestation. Cutting of trees results to the endangered habitats of animals and the soil compaction is becoming less and less.
2. Hunting. Killing animals mercilessly and selling them off reduces their numbers and increase the fear of humans
3. Genetic engineering. Modifying the cell structure of a plant or animal increases possible risk of cancer, toxicity in the soil and others.

Habitat degradation and fragmentation, introduction of exotic species and over harvesting.

These activities disrupt the natural function of a variety of species.

Humans must understand evolution to assess the effect these activities can have on various species and the environment

Which of the following is the best name for a compound made from nitrogen and oxygen? (N2O3) nitrogen oxide nitrogen II oxide nitrogen trioxide dinitrogen trioxide

Answers

The best name for the compound is DINITROGEN TRIOXIDE.

Each chemical compound is always represented by a chemical symbol, which shows the ratio at which each atom of the elements of the compound are combine together and this is often used in naming the compound. Looking at the compound given in the question, the compound is made up of two atoms of nitrogen and three atoms of oxygen and this fact was used in naming the compound. In naming chemical compounds, 'Di' stands for 2 while 'Tri' stands for 3. Since there are two nitrogen and three oxygen atoms in the compound, that was why it was named dinitrogen trioxide.

Dinitrogen Trioxide is the answer trust me

Expressed in proper scientific notation, the number is 0.00213 a 0.213 x 10² b. 2.13 x 10⁻² c. 2.13 x 10⁻³ d. 213 x10⁰