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3 years ago

When a bond forms between two atoms

Chemistry

2 answers:

ahrayia [7]3 years ago

6 0

Answer: The correct answer is Option C.

Explanation:

A bond is formed of when two atoms come close to each other either by sharing electrons or by transferring of electrons from one atom to another.

In the process of bond formation, energy is released.

A bond is broken between two atoms when the atoms get away from each other. In the process of bond breaking, energy is required.

Hence, the correct answer is Option C.

Liono4ka [1.6K]3 years ago

4 0

C. energy is released
(Forming bond is exothermic)

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Carbon dioxide (CO2) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 30 lbf/in2, and a volume of 1.6 f

solong [7]

Answer:

The answer to this question can be given as:

The initial pressure P= 30 lbf/in2

The initial temperature T1=80°F.

The initial volume=final volume V= 1.6 ft3.

Final temperature T2=500°F

Heat transfer Q=-2.6 Btu.

pressure (P) (lbf/in2) change into lbf/ft2

P=30 lbf/in2=4320lbf/ft2.

Temperature (T1) °F change into °K

temperature T1=80°F=539.67 °K

Ideal gas formula:

M=PV/RT1. where T1=initial temperature.

M=4320*1.6/35.114*539.67.

M=0.364749 lb Mass at Carbon dioxide (CO2).

DQ=DU+W second law.

-2.6=MCV(T2-T1)+ W

-2.6-(0.364749*1.6(500-80))=W

W=-27.111 b+u am----> work done.

Explanation:

The explanation to this question can be given as:

Firstly we write the equation that is given in the question like, pressure, volume, gas constant, temperature. Then we covert the pressure and temperature into there possible values. Then We apply the formula of Ideal gas that is M=PV/RT1. where M is the mass, P is the pressure , V is the volume , R is the gas constant (0.08206 L·atm·K−1·mol−1) and T1 is the initial temperature. Then we use the second formula that is DQ=DU+W. Where DQ= Heat transfer, DU=MCV(T2-T1)and W= work. It is used for finding work.

8 0

3 years ago

Help please !!!!!!!!!!

Vedmedyk [2.9K]

25 sugar because the mass should be equal on both sides

5 0

3 years ago

Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The balanced chemical equation is: 2Mg + O2 → 2M

tigry1 [53]

Answer:

We will expect 4 moles of MgO to be formed (option b).

Explanation:

Step 1: The balanced equation

2Mg + O2 → 2MgO

Step 2: Data given

Number of moles of Magnesium = 4 moles

Oxygen = in excess → this means Magnesium is the limiting reactant

Magnesium will completely be consumed ( 4 moles). There will remain 0 moles.

For 2 moles of magnesium consumed, we need 1 mole of oxygen to produce 2 moles of MgO.

For 4 moles of magnesium, we need 4/2 = 2 moles of oxygen.

For 4 moles of magnesium, we will produce 4/1 = 4 moles of MgO

We will expect 4 moles of MgO to be formed (option b).

4 0

3 years ago

What is the formal charge of nitrogen in no2cl

Gre4nikov [31]

Answer:

The formal charge on nitrogen in $NO_{2}Cl$ is +1.

Explanation:

The structure of $NO_{2}Cl$ is as follows.

(In attachment)

$Formal\, charge = Valence\, electron - (nonbonding\, electrons + \frac{Bonding\,electrons}{2})$

From the structure, Nitrogen has no non bonding electrons. Nitrogen has four bonds and each bond corresponds to 2 electrons. Hence, nitrogen have eight bonding electrons and five valence electrons.

$Formal\,charge\,on\,nitrogen = 5-[0+ \frac{8}{2}]= +1$

Therefore, The formal charge on nitrogen in $NO_{2}Cl$ is +1.

6 0

4 years ago

Chem question!! please help!!!

podryga [215]

Cu is the answer... :)

6 0

3 years ago