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3 years ago

10

PLEASE! I need help in chemistry. If you are good in chemistry, please send your gm^ail. I have a lab to send. But I am stuck. P

lease help!!

1 answer:

stiv31 [10]3 years ago

6 0

Answer:

can you send the work off of here? what is the lab over?

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For each of the following compounds, state whether it is ionic or covalent, and if it is ionic, write the symbols for the ions i

kupik [55]

Answer :

Covalent compound : It is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound.

The covalent compound are usually formed when two non-metals react.

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

All the polyatomic ions always form an ionic compound.

Polyatomic ions : It is a charged species that composed of two or more atoms and these charged species are bonded by the covalent bond.

For the given options:

Option A: $KClO_4$

This compound is formed by the combination of potassium, $K^+$ which is a metal and $ClO_4^-$ ion which is a polyatomic ion. Thus, it will form an ionic compound.

Option B: $Mg(C_2H_3O_2)_2$

This compound is formed by the combination of magnesium, $Mg^{2+}$ which is a metal and $C_2H_3O_2^{-}$ ion which is a polyatomic ion. Thus, it will form an ionic compound.

Option C: $H_2S$

Hydrogen and sulfur, both are non-metals and they will form a covalent compound.

Option D: $Ag_2S$

This compound is formed by the combination of silver, $Ag^{+}$ which is a metal and sulfur, $S^{2-}$ which is a non-metal. Thus, it will form an ionic compound.

Option E: $N_2Cl_4$

Nitrogen and chlorine, both are non-metals and they will form a covalent compound.

Option F: $Co(NO_3)_2$

This compound is formed by the combination of cobalt, $Co^{2+}$ which is a metal and $NO_3^{-}$ ion which is a polyatomic ion. Thus, it will form an ionic compound.

6 0

3 years ago

Please Help!!!<br> Match the term to its definition

Bingel [31]

Answer:

Tides: the rise and fall of sea levels due to gravitational forces

Tidal bulges: two ocean bulges created on opposite sides of the earth due to the moons gravitational pull and the oceans resistance

Spring tide: tides where there is the greatest difference between high and low tide

Neap tide: tides where there is the least difference between high and low tide

3 0

3 years ago

Read 2 more answers

Which of the following is the primary medium for beach erosion?

Rus_ich [418]

Answer:

Water is the primary erosion

hope it helps :)

3 0

3 years ago

Explain why it is not a good idea to throw an aerosol can into a fire. Which gas law applies?

Helga [31]

The gas inside the can and the can’s volume are both constant.
The gas pressure increases with increasing temperature.
The can will burst if the pressure becomes great enough.
The gas law that applies is Gay-Lussac’s law.

5 0

3 years ago

Read 2 more answers

In the second footnote it was pointed out that mass and energy are alternate aspects of a single entity called mass-energy. The

Artemon [7]

Answer:

The corresponding mass change in this process is $1.9055\times 10^{-8} g$

Explanation:

$E= mc^2$ ,

where :

E is energy released with respect to mass

m is change mass

c is the speed of light.

2.096 g of hydrogen molecules combined with 96.000 g of oxygen molecules to form water and released energy E.

$E=1.715\times 10^3 kJ=1.715\times 10^6 J$

Mass change in this process = m

$1.715\times 10^6 J=m\times (3\times 10^8 m/s)^2$

$m=1.9055\times 10^{-11} kg=1.9055\times 10^{-8} g$

The change in mass calculated from Einstein equation is small that its effect on formation of product will be negligible.Hence, law of conservation of mass holds correct for chemical reactions.

4 0

3 years ago