The electron cloud model describes the _

Three quantum numbers are derived from Schrodinger’s equation that describe the probability of finding an electron around a nucl

hodyreva [135]

Principle: Orbital size & main energy level

Angular: Orbital shape

Magnetic: Orbital orientation

Orbital size is Principle; main energy level is Principle; shape is Angular; orientation is Magnetic

Principle:

imagine a bullseye. each ring shows how far its from the nucleus

Angular:

0 looks like circle

1 looks like a bowtie

2 looks like a flower or 4 leaf clover

3 looks like multiple lobes

Principle Quantum Number: It describes the size of the orbital and the main energy level. It is represented by n. Where, n = 1,2,3,4....stands for K, L, M, N shell and so on..

Angular momentum Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of will be -2, -1, 0, +1, +2.

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3 0

2 years ago

How does an increase in concentration affect a chemical reaction? (3 points)

Firlakuza [10]

Answer:

Explanation:

1. Increasing the concentrations of reactants in a chemical reaction would affect a reaction positively by increasing the number of collisions within a particular period which in turn increases the rate of reaction.

2. The molecules gains energy,which enable them to move faster and collide with the right energy for a reaction to take place.

3. The average kinetic motion of molecules in a solution can be measured by measuring the temperature. Temperature is a measure of the average kinetic energy of molecules in a solution.

4 0

4 years ago

What is ΔE in kJ for a system that receives 1.79 kJ of heat from surroundings and has 4.51 kcal of work done on it at the same t

kenny6666 [7]

Answer: 20.7 kJ

Explanation:

According to first law of thermodynamics:

$\Delta E=q+w$

$\Delta E$ =Change in internal energy

q = heat absorbed or released

w = work done or by the system

w = work done on the system= $-P\Delta V$ {Work is done on the system is positive as the final volume is lesser than initial volume}

w = 4.51 kcal = $4.51\times 4.184kJ=18.9kJ$ (1kcal = 4.184kJ)

q = +1.79 kJ {Heat absorbed by the system is positive}

$\Delta E=+1.79+(18.9)=20.7kJ$

Thus $\Delta E$ for a system that receives 1.79 kJ of heat from surroundings and has 4.51 kcal of work done on it at the same time is 20.7 kJ

4 0

3 years ago

Write an expression that can be used to check the quotient of 646÷3

iVinArrow [24]

Answer:

215.33

Explanation:

A mathematical expression is an equation that connect one or more variables with constants.

The Quotient is the result of carrying out the division operation.let "y" be the quotient of dividing 646 by 3

therefore 646÷3 =y

$\frac{646}{3}=y\\ 3y=646\\$

$y=\frac{646}{3}\\ y=215.33$

5 0

3 years ago

State the purpose of Watson and crick DNA structure experiment

gulaghasi [49]

Answer:

In Watson and Crick's model, the two strands of the DNA double helix are held together by hydrogen bonds between nitrogenous bases on opposite strands. Each pair of bases lies flat, forming a "rung" on the ladder of the DNA molecule.

Explanation:

hope it helps ya

8 0

3 years ago

The electron cloud model describes the __of electrons in an atom.