CHEMISTRY HIGH SCHOOL

When are ionic bonds formed?

Answers

Answer 1
Answer: The Ionic bond occurs with formation of ions, which are by electrostatic attraction. Occurs between metal, which has a tendency to lose electrons, and a non-metal, which tends to receive electrons. An example of this type of link is sodium chloride (NaCl)

Na⁺ and Cl⁻

hope this helps!

Related Questions

HIGH SCHOOL

When a solution of LiC2H3O2 reacts with a solution of MgSO4, what is the net ionic equation? No reaction

Mg+2 (aq) + C2H3O2- (aq) → Mg(C2H3O2)2 (s)

Mg+2 (aq) + 2C2H3O2- (aq) → Mg(C2H3O2)2 (s)

2Li+ (aq) + SO4-2 (aq) → Li2SO4 (s)

Answers

I think the correct answer would be the first option. When a solution of LiC2H3O2 is mixed  with a solution of MgSO4, no reaction would be observed from the mixture. This is because magnesium cannot replace lithium from the acetate compound. Lithium is the least reactive substance based from the activity series. So, it can only react with a few substances and it does involve the reaction with magnesium sulfate. It is the very least reactive of all the alkali metals. 
HIGH SCHOOL

Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest of all substances known. What is the appropriate justification for this?

Answers

Although coal and diamonds are both composed of carbons alone, they differ in their properties because of the bonds present in each substance. Diamonds are composed of covalent bonds which are strong and is crystalline in nature which makes it sturdier. Coal is amorphous which allows the slipping of irregular layers to each other making coal brittle
COLLEGE

In a typical analysis, 15 ml of an aqueous solution containing an unknown amount of acetylcholine had a ph of 7.65. when incubated with acetylcholinesterase, the ph of the solution decreased to 6.87. assuming there was no buffer in the assay mixture, determine the number of moles of acetylcholine in the 15 ml sample.

Answers

pH of the solution before incubation = 7.65

pH after the solution was incubated with acetylcholinesterase = 6.87

After incubation,

Difference in the concentration of hydronium ion =

When solution containing acetylcholine is incubated with acetylcholinesterase, acetylcholine is converted to acetic acid and choline. So the decrease in the concentration of acetylcholine will be equal to the increase in the concentration of hydronium ion produced from acetic acid.

Moles of acetylcholine =


MIDDLE SCHOOL

What is the molarity of a solution made by dissolving 5.5 g of KI in enough water to make 150 ml of solution?

Answers

Answer:

Explanation:

1. Convert grams to moles.  

2. Convert millilitres to litres  

3. Calculate the molar concentration

The molar concentration of KI is .

Answer:

Explanation:

molarity is moles of solute/L solution

5.5 g                         1 moles Kl             1000 mL

_____                   *  __________    *    ________ = 0.22088 M

150 ml of solution     166 grams              1 L

       (39 grams K+ 127 grams I) ^

MIDDLE SCHOOL

Can you give an example of a dramatic climate change that could occur in the near future?

Answers

A Ice age could occur in the near future causing a mass extinction this is due to global warming.

MIDDLE SCHOOL

Discuss 2 ways the cells are alike

Answers

The cell theory states that all cells come from other cells. When cells reproduce, they make copies of their DNA and make copies of their DNA and pass it on to the new cells.

HIGH SCHOOL

What is the difference between single, double, and triple covalent bonds? How many shared electrons are in each?

Answers

Answer

A *single covalent bond* is formed by sharing one pair of valence electrons.They are less reactive comparatviely and have a high bond length

A *double covalent bond* is formed by sharing two pairs of valence electrons.They are moderately reactive and have moderate bond length.

A *triple covalent bond* is formed by sharing three pairs of valence electrons.They are highly reactive and have a low bond length.

Answer:

The single covalent bond is represented by a single ' - ' and it has 2 shared electrons from the the bonding atoms.

Double covalent bond is denoted with '=' and it has 4 shared electrons

Triple covalent bond is denoted by ' _=' and it has 6 shared electrons

Explanation:

In single covalent bond each participating atom contributes one electron each to be equally shared between them in order to form a single covalent bond. Thus a single covalent bond is formed when atoms share 2 electrons together

The double covalent bond is formed when each participating atom contributes two electrons each to be equally shared between them in order to form a double covalent bond. Thus a double covalent bond results from the sharing of 4 electrons together by two atoms. For example the formation of oxygen gas molecule

In triple covalent bonds, 6 electrons are shared and each pair of electrons forms a bond which results in triple covalent bonds. Each atom contributes 3 electrons for equal sharing.

MIDDLE SCHOOL

How many molecules of carbon dioxide are in 3.50 moles of carbon dioxide?

Answers

There is 18.066* 10^23 molecules of carbon in 3.50 moles of carbon dioxide.

Answer:

21.07x10^23

Explanation:

MIDDLE SCHOOL

Values for the molar mass of nitrogen, oxygen, and nitrogen dioxide molecules are given in the table below. What mass of nitrogen dioxide
molecules is formed when 1 mole of nitrogen reacts with 2 moles of oxygen
and forms nitrogen dioxide?
Molecule
Molar mass (g/mol)
N2
28.02
02
32.00
NO2
46.01

Answers

Answer:

n=N/Na

n =  \frac{8.23 \times {10}^{22} }{6.02  \times {10}^{23} }  = 0.1367 \: mol

answer: 0.14 mol

Explanation:

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