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den301095 [7]
3 years ago
6

What property of air allows it to flow down to the floor?​

Chemistry
1 answer:
Mandarinka [93]3 years ago
5 0

I am not sure about my answer, but I think that it's density allows it to fall to the ground/floor.

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PLEASE HELP ME :)
KiRa [710]

Answer:

Ice melting is a physical change. Physical changes are changes which affect the form of a chemical substance, but not its chemical composition. Certain factors, such as, temperature, contribute to the melting of ice, but it will be classified as a physical change, because the number of molecules present in the water does not change.  

Explanation:

3 0
3 years ago
A plane on the ground will weigh
sergejj [24]

Answer:

The weight of the plane is  (mass) x (acceleration of gravity).

Neither of these changes when the plane rises from the ground.

Its weight on the ground is equal to (the same as) its weight in the air.

5 0
3 years ago
Rank the following elements by electron affinity, from most positive to most negative EA value. Rank from most positive to most
Svetlanka [38]

Answer:

Most positive = rubidium

Most negative = fluorine

Explanation:

Electron affinity of an element is the energy released when an electron is attached to a neural atom to form an ion in its gaseous state.

X + e⁻ → X⁻

Electron affinity is similar to electronegativity which is the tendency at which an atom accepts an ion towards itself.

Electron affinity increases across the period and decreases down the group in the periodic table.

In the above option,

Fluorine has the highest electron affinity

Rubidium has the lowest electron affinity

Tellurium and then finally Phosphorus

Helium in this case would have the lowest electron affinity because it has filled orbital and does not require any electron to attain stability. Technically, Helium has the lowest or is expected to have the lowest electron affinity which is close to zero according to quantum mechanics.

Most positive = rubidium

Most negative = fluorine.

You can check periodic table for their exact values

6 0
4 years ago
Q: What property of propane does Rodriguez change using the burner? Support your answer with evidence from the text.
UNO [17]

Answer:

The wind is starting to blow stronger, and when you’re riding in a basket under a hot air

balloon, just 400 feet above ground, that’s not necessarily a good thing. Keith Rodriguez looks

to the horizon and squints. He had planned to take off from Scioto Downs, a horse racetrack

south of Columbus, Ohio, fly a few miles north, and land his balloon in a barren cornfield next

to his pickup truck.  

Then the wind changed. Instead of a light breeze from the south, now Rodriguez’s bright red

balloon is getting hit by stronger, colder winds from the west. He has plenty of propane fuel in

his tank—he probably could ride the wind halfway to Pennsylvania. But that would be

dangerous. Rodriguez’s choice of landing sites just became very limited. As the balloon

switches direction and floats east, everything below becomes a wide carpet of suburban

sprawl—big‐box stores, major highways, strip malls. Beyond the stores lie forests.

Explanation:

7 0
3 years ago
Choose all of the answers that describe beneficial microorganisms.
REY [17]

Answer:

1, 4,3,2

Explanation:

7 0
2 years ago
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