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3 years ago

How do an ionic bond and a covalent bond differ?

2 answers:

8 0

The formation of compound takes place by atom in order to complete their octet and attain stability. The atom combine with other atom either by sharing of electrons or transfer of electrons from one atom to other. The sharing of electrons results in the formation of covalent bond whereas transfer of electrons results in formation of ionic bond. The loss of electron from an atom results in formation of cation whereas gain of electron results in the formation of anion. The force of attraction between the two oppositely charged ions is electrostatic force of attarction.

Hence, an ionic bond is an attraction between opposite charged ions. a covalent bond is sharing of electrons between atoms.

Lorico [155]3 years ago

6 0

Answer:

C. an ionic bond is an attraction between opposite charged ions. a covalent bond is sharing of electrons between atoms

Explanation:

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compound 1 contains 15.0g of hydrogen and 120.0g oxygen. What is the percent compound of each element?

allsm [11]

Note down the formula below

$\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}$

Mass of the compound

$\\ \sf\longmapsto 15+120=135g$

Mass % of Hydrogen:-

$\\ \sf\longmapsto \dfrac{15}{135}\times 100$

$\\ \sf\longmapsto \dfrac{1}{9}\times 100$

$\\ \sf\longmapsto 11.1\%$

Mass % of Oxygen:-

$\\ \sf\longmapsto \dfrac{120}{135}\times 100$

$\\ \sf\longmapsto \dfrac{8}{9}\times 100$

$\\ \sf\longmapsto 88.9\%$

8 0

3 years ago

John recently purchased a High Definition plasma television and needed to have it installed. The installers told John that for t

ioda

Ductility - a materials ability to stretch, ie if you pull it apart does it stretch to a wire.

density - ratio of volume to mass

conductivity - materials ability to conduct a current.

hopefully with these definitions you can figure out the answer.

8 0

3 years ago

Read 2 more answers

If you triple the force on an object , the acceleration will

vazorg [7]

Answer:

C triple

Explanation:

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8 0

3 years ago

A certain radioactive isotope decays at a rate of 0.2% annually. Determine the half-life of this isotope, to the nearest year

pychu [463]

Answer:

The half-life of the radioactive isotope is 346 years.

Explanation:

The decay rate of the isotope is modelled after the following first-order linear ordinary differential equation:

$\frac{dm}{dt} = -\frac{m}{\tau}$

Where:

$m$ - Current isotope mass, measured in kilograms.

$t$ - Time, measured in years.

$\tau$ - Time constant, measured in years.

The solution of this differential equation is:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$

Where $m_{o}$ is the initial mass of the isotope. It is known that radioactive isotope decays at a yearly rate of 0.2 % annually, then, the following relationship is obtained: