What is the value of mass of electron?for which has 6.25 × 10^18?

Answers

Answer 1
Answer:

Answer: the mass of an electron is approximately 9.10938356 × 10^-31 kilograms (kg)

Explanation:


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Who discovered the electron?

Answers

J.J. Thomson discovered the electron  1897

Which is a cause of polarity in water molecules? partial negative charge on the hydrogen atoms partial positive charge on the oxygen atom high electronegativity difference between oxygen and hydrogen low electronegativity difference between oxygen and hydrogen

Answers

Answer:

high electronegativity difference between oxygen and hydrogen

Explanation:

Final answer:

Water molecules become polar due to the difference in electronegativity between the oxygen and hydrogen atoms. This leads to the development of partial positive charges on the hydrogen atoms and a partial negative charge on the oxygen atom. These polar bonds allow for the formation of hydrogen bonds with other molecules.

Explanation:

Water is a polar molecule, with the hydrogen atoms acquiring a partial positive charge and the oxygen a partial negative charge. This occurs because the nucleus of the oxygen atom is more attractive to the electrons of the hydrogen atoms than the hydrogen nucleus is to the oxygen's electrons. Thus oxygen has a higher electronegativity than hydrogen and the shared electrons spend more time in the vicinity of the oxygen nucleus than they do near the nucleus of the hydrogen atoms, giving the atoms of oxygen and hydrogen slightly negative and positive charges, respectively. Another way of stating this is that the probability of finding a shared electron near an oxygen nucleus is more likely than finding it near a hydrogen nucleus. Either way, the atom's relative electronegativity contributes to the development of partial charges whenever one element is significantly more electronegative than the other, and the charges generated by these polar bonds may then be used for the formation of hydrogen bonds based on the attraction of opposite partial charges. (Hydrogen bonds, which are discussed in detail below, are weak bonds between slightly positively charged hydrogen atoms to slightly negatively charged atoms in other molecules.) Since macromolecules often have atoms within them that differ in electronegativity, polar bonds are often present in organic molecules.

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Chuck wants to know how many electrons in an atom are not paired up. Which model would be best for Chuck to writeout?
a set of quantum numbers for the last electron in the atom
a configuration with numbers, letters, and superscripts
a dot structure of the atom
an orbital notation of the atom

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Answer:

D. an orbital notation of the atom

Explanation:

Orbital notiation uses lines and arrows to show shells, subshells, and orbitals for electrons in an atom. Since it shows arrows being paired up in this diagram it would be the best model for Chuck to use.

On Edgenuity2020, the answer is D) an orbital notation of the atom

Igneous rocks with an andesitic composition ________.

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are found along volcanic island arcs

When a substances is dissolved in fluid, the substance is referred to as the ______, the fluid it dissolves into the ______, and the entire mixture is called the _______

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Answer:

solute, solvent, solution

solute dissolve in a solvent and the end product is called solution

Why might calcium be important in the diet of many living
things?

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Answer:

Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health. Humans need calcium to build and maintain strong bones, and 99% of the body’s calcium is in the bones and teeth.

Answer: Helps form bones and shells

Explanation: