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hammer [34]
3 years ago
14

What is the role of water in the illustration?

Chemistry
1 answer:
Papessa [141]3 years ago
3 0

Answer:

it's B

Explanation:

I'm pretty sure trust me

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How many grams of mercury would be contained in 15 compact fluorescent light bulbs?
zhenek [66]

Answer:

Grams of mercury= 0.06 g of Hg

Note: The question is incomplete. The complete question is as follows:

A compact fluorescent light bulb contains 4 mg of mercury. How many grams of mercury would be contained in 15 compact fluorescent light bulbs?

Explanation:

Since one fluorescent light bulb contains 4 mg of mercury,

15 such bulbs will contain 15 * 4 mg of mercury = 60 mg

1 mg = 0.001 g

Therefore, 60 mg = 0.001 g * 60 = 0.06 g of mercury.

Compact fluorescent lightbulbs (CFLs) are tubes containing mercury and noble gases. When electricity is passed through the bulb, electron-streams flow from a tungsten-coated coil. They collide with mercury atoms, exciting their electrons and creating flashes of ultraviolet light. A phosphor coating on the inside of the tube absorbs this UV light flashes and re-emits it as visible light. The amount of mercury in a fluorescent lamp varies from 3 to 46 mg, depending on lamp size and age.

5 0
3 years ago
Atoms of which two elements have combined total of 23 protons​
vichka [17]

Answer:

sodium and magnesium

Explanation:

4 0
3 years ago
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At stp which gas will diffuse more readily than ne
pav-90 [236]
I am assuming you are talking about Neon. The rate of diffusion is directly proportional to the molar mass of the gas. Since neon has a molar mass of 20.18 grams, the gas must have a lower molar mass and must be a gas at 273 Kelvin. There are several elements that fulfill this criteria: Hydrogen, Helium, Oxygen, Nitrogen, and Fluorine. 
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3 years ago
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When humans burn fossil fuels, most of the carbon quickly enters the_______
Len [333]

Answer:

Atmosphere.

Explanation:

Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.

8 0
3 years ago
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You are pushing on a heavy door, trying to slide it open. If your friend stands behind you and helps you push, how have the forc
NeTakaya

Answer:

o tudo bie ms ouemuyllen quearomuit oajuda rvoc  mi psarcisoqu e termnei ed cmoepetar esta questlã.oê

Explanation:

a egur oguta nestáincompel ta

6 0
2 years ago
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