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4 years ago

What happens to the molecules of water as it freezes?

1 answer:

6 0

When Water freezes or begin to freeze, it molecules start to slow down enough that their attraction arrange into one shape till they melt again.

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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 $4.424\times 10^{-5}m/s$

8 0

3 years ago

ASAP NEED HELP, WILL MARK BRAINLEST, WHEN ASKING A QUESTION I REPEAT DO NOT ASK IT IN THE ANSWER SECTION, THANKS FOR READING. (b

kicyunya [14]

Answer:

Look at the images/files below :) Hope it helps Have a great day!

Explanation:

7 0

3 years ago

Read 2 more answers

What is the speed of a bird that flies 25 meters in 25 minutes?

nika2105 [10]

Answer:

1mpm(1 meters per minute) Explanation: Speed:Distance/time 25/25=1 plz mark as brainliest

5 0

3 years ago

Read 2 more answers

Which of these statements explains the relationship among elements, compounds, and mixtures?

gladu [14]

A compound is where two or more elements have chemically bonded, and a mixture is where there are two or more elements are grouped together, but they are not chemically bonded.
An example of a mixture would be salt dissolved in water, and an example of a compound would be water (which is made up of 2 Hydrogen and 1 Oxygen bonded together)

tl;dr: I would go with B, basically.

6 0

3 years ago

Mass weight of original copper rod

jolli1 [7]

Answer:

copper, 8930.

Explanation:

Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. to сuprum (Latin). Coper (Old English) and copper were derived from this, the later spelling first used around 1530. muscle, and bone. The adult body contains between 1.4 and 2.1 mg of copper per kilogram of body weight.

8 0

3 years ago