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3 years ago

What are the different areas of an electron cloud called?

Chemistry

1 answer:

kifflom [539]3 years ago

5 0

They are called "energy levels".

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Complete the word equation for making a salt.

dalvyx [7]

Answer:

acid +alkaline =salt and water

Explanation:

if an acid reacts with an alkaline they form salt and water

4 0

3 years ago

Read 2 more answers

Two basic properties of the liquid phase

melamori03 [73]

Fixed density
Particles move smoothly

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4 years ago

Alveoli are tiny sacs of air in the lungs. Their average diameter is 4.50 × 10−5 m. Calculate the uncertainty in the velocity of

Arisa [49]

<u>Answer:</u> The uncertainty in the velocity of oxygen molecule is $4.424\times 10^{-5}m/s$

<u>Explanation:</u>

The diameter of the molecule will be equal to the uncertainty in position.

The equation representing Heisenberg's uncertainty principle follows:

$\Delta x.\Delta p=\frac{h}{2\pi}$

where,

$\Delta x$ = uncertainty in position = d = $4.50\times 10^{-5}m$

$\Delta p$ = uncertainty in momentum = $m\Delta v$

m = mass of oxygen molecule = $5.30\times 10^{-26}kg$

h = Planck's constant = $6.627\times 10^{-34}kgm^2/s^2$

Putting values in above equation, we get:

$4.50\times 10^{-5}m\times 5.30\times 10^{-26}kg\times \Delta v=\frac{6.627\times 10^{-34}kgm^2/s}{2\times 3.14}\\\\\Delta v=\frac{6.627\times 10^{-34}kgm^2/s^2}{2\times 3.14\times 4.50\times 10^{-5}m\times 5.30\times 10^{-26}kg}=4.424\times 10^{-5}m/s$

Hence, the uncertainty in the velocity of oxygen molecule is $4.424\times 10^{-5}m/s$

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3 years ago

Explain how the bonding model for sodium metal would differ from the bonding model for sodium chloride, NaCi

Elina [12.6K]

Sodium metal is quite reactive; sodium ions (as in NaCl) are quite unreactive. Cl^- ions are not reactive; they are stingily attracted to positive ions such as Na^+with which they form ionic bonds.

8 0

3 years ago

Many fundamental concepts are at the heart of chemistry. Match the description to the name.

Lisa [10]

Answer:

you dony have a picture for me to match them

Explanation:

4 0

2 years ago