1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
serg [7]
3 years ago
14

What happens when atoms bonds?​

Chemistry
1 answer:
jok3333 [9.3K]3 years ago
8 0
Atoms form chemical bonds to make their outer electron shells more stable. ... An ionic bond, where one atom essentially donates an electron to another, forms when one atom becomes stable by losing its outer electrons and the other atoms become stable (usually by filling its valence shell) by gaining the electrons.
You might be interested in
From data below, calculate the total heat (in J) associated with the conversion of 0.499 mol ethanol gas (C2H6O) at 301°C and 1
8_murik_8 [283]

Answer:

The total heat associated is -30,520.3 J.

Explanation:

Moles of ethanol = 0.499 moles

Molar mass of ethanol = 46 g/mol  

Mass = Moles × Molar mass = 0.499 moles × 46 g/mol = 22.954 g

m is the mass of ethanol = 22.954 g

Q₁ is heat involved in the conversion of 22.954 g ethanol gas at 301°C to ethanol gas at 78.5°C

Thus, Q₁ = m × c × ΔT

Where,  

c =  The specific heat of the gas = 1.43 J/g°C

ΔT = Final temperature - Initial temperature = 78.5 - 301°C  

= - 222.5 °C

Applying the values in the above equation as:-

Q_1 = 22.954 g\times 1.43 J/g^0C\times (-222.5^oC) = -7303.3J

Q₂ is the enthalpy of condensation from gas to liquid for the given mass of ethanol .

Thus, Q₂ = moles×ΔH condensation  

Given that:- ΔH vaporization = 40.5 kJ/mol

Enthalpy of condensation of gaseous ethanol to liquid ethanol = - 40.5 kJ/mol

Considering, 1 kJ = 1000 J

So,  

ΔH condensation = - 40.5 ×1000 J/mol = - 40500 J/mol

Thus, Q₂ = 0.499 moles × (- 40500 J/mol) = -20209.5 J

Q₃ is heat involved in the conversion of 22.954 g gaseous ethanol at 78.5°C to ethanol liquid at 25.0°C.

Thus, Q₃ = m × C ×ΔT

Where,  

C = The specific heat of the liquid = 2.45 J/g°C

ΔT = Final temperature - Initial temperature = 25.0 - 78.5 °C  

= - 53.5 °C

Applying the values in the above equation as:-

Q_3 = 22.954 g\times 2.45 J/g^0C\times (-53.5 ^0C)=-3007.5 J

Applying the values as:

Total heat = Q_1+Q_2+Q_3

= -7303.3 J - 20209.5 J - 3007.5 J

= -30,520.3 J

The total heat associated is -30,520.3 J.

4 0
3 years ago
You throw a barbeque for your friends. Before you start the grill, your propane tank has a pressure of 78 psi. When you’re finis
Otrada [13]

Answer:

get new friends

Explanation:

it be the closest

7 0
3 years ago
Read 2 more answers
Write the net ionic equation for the precipitation reaction that occurs when aqueous solutions of potassium hydroxide and nickel
Gnom [1K]

<u>Answer:</u> The net ionic equation is written below.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of nickel (II) acetate and potassium hydroxide is given as:

Ni(CH_3COO)_2(aq.)+2KOH(aq.)\rightarrow 2CH_3COOK(aq.)+Ni(NO_3)_2(s)

Ionic form of the above equation follows:

Ni^{2+}(aq.)+2CH_3COO^-(aq.)+2K^+(aq.)+2OH^-(aq.)\rightarrow 2CH_3COO^-(aq.)+2K^+(aq.)+Ni(OH)_2(s)

As, acetate and potassium ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

Ni^{2+}(aq.)+2OH^-(aq.)\rightarrow Ni(OH)_2(s)

Hence, the net ionic equation is written above.

4 0
3 years ago
Tetrachloromethane, CCl4, is classified as a
Soloha48 [4]
Correct Answer: <span>compound because the atoms of the elements are combined in a fixed proportion.

Reason:
A </span><span> chemical </span>compound is a chemical substance composed of element (of same or different type) that are bonded in a fixed proportion. Depending upon the type of element, bond can be ionic or covalent. In present case, <span>tetrachloromethane i.e. CCl4 has one 'C' atom that is covalently bonded to four 'Cl' atoms. </span>
8 0
3 years ago
Read 2 more answers
Help me I am stuck in science, click on this
Marta_Voda [28]
First is hydrogen and second is oxygen
4 0
3 years ago
Read 2 more answers
Other questions:
  • How to predict boiling points?
    15·2 answers
  • In an experiment in space, one proton is held fixed and another proton is released from rest a distance of 2.00mm away. What is
    13·1 answer
  • A hurricane and a typhoon are the same thing true or false?
    9·2 answers
  • A hypothesis is based on the analysis of data collected in a controlled
    8·2 answers
  • __________ are composed of two or more covalently bonded atoms.
    12·2 answers
  • During fission, _____. protons collide to create uranium-235 new elements are created when uranium breaks apart hydrogen atoms a
    5·2 answers
  • How many sulfur atoms are there in 4.45 mol of sulfur?
    8·1 answer
  • Which of these are correct
    9·1 answer
  • Which ball has the most energy?
    5·2 answers
  • Gastric acid plays a key role in the digestion of proteins by activating digestive enzymes and often has a pH value in the range
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!