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Maksim231197 [3]
3 years ago
6

The electron configuration 1sÆ 2sÆ2pÒ 3sÆ3pÒ represents which noble gas?

Chemistry
1 answer:
ch4aika [34]3 years ago
4 0
This noble gas is argon (Ar), because its third energy level is full.
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Which sentence describes a tropical rainforest ?
kvasek [131]

Answer is: D. it is always wet.

Tropical rainforests are rainforests that occur in areas of tropical rainforest climate, between 10 degrees north and south of the equator.

In tropical rainforest there is no dry season, all months have an average precipitation of at least 60 mm.

Tropical rainforests contain a lot animal species.

They have high levels of biodiversity, around 40% to 75% of all biotic species are in the rainforest.

4 0
3 years ago
Provide a brief description of how the respiratory system works
Rus_ich [418]

Answer:

The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out. When you breathe in, the diaphragm moves downward toward the abdomen, and the rib muscles pull the ribs upward and outward.

Explanation:

3 0
3 years ago
A sample of gas initially has a volume of 2.25 L at 350 K and a pressure of 1.75 atm. What will be sample pressure if the volume
IRINA_888 [86]

Answer:

8.44 atm

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 2.25 L

Initial temperature (T₁) = 350 K

Initial pressure (P₁) = 1.75 atm

Final volume (V₂) = 1 L

Final temperature (T₂) = 750 K

Final pressure (P₂) =?

The final pressure of the gas can be obtained as illustrated below:

P₁V₁/T₁ = P₂V₂/T₂

1.75 × 2.25 / 350 = P₂ × 1 / 750

3.9375 / 350 = P₂ / 750

Cross multiply

350 × P₂ = 3.9375 × 750

350 × P₂ = 2953.125

Divide both side by 350

P₂ = 2953.125 / 350

P₂ = 8.44 atm

Thus, the final pressure of the gas is 8.44 atm.

7 0
3 years ago
PLEASE HELP THIS IS SCIENCE
timofeeve [1]

I'm pretty sure the answer is A.

7 0
3 years ago
Read 2 more answers
HELP ASAP!! DUE TOMORROW!! WILL MARK AS BRAINLIEST IF ANSWERED IN THE NEXT HOUR!!
fgiga [73]
2. Left to right (smallest to largest) F-, Mg2+, Na+, and K+

5. Cs, Ga, As, N, O

6. Cs or H (probably cesium)

7. In or In 2+ (not sure which)

Hope this helps, I've never really seen questions like this before.
3 0
4 years ago
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