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Lisa [10]
3 years ago
11

What would happen if a jar of helium gas was opened

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
6 0
The helium will float out and will be replaced by air if you open the air.
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List some ways houses would be built differently if gravity were much stronger or weaker
Afina-wow [57]
If gravity where much weaker, then the houses wouldnt need as much structural support, and then could be built much more taller as they wouldnt go through as much stress. and if gravity was stronger, buildings would need to be alot more structurally sound and wouldnt be able to maintain a tall structure as the force of gravity would be too much for them. hope i helped :3
4 0
3 years ago
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You are on the Titanic and want to find something that will float because you didn't
damaskus [11]

Find volume of pillow

L=78cm

B=55cm

H=25cm

\\ \bull\tt\longrightarrow V=LBH

\\ \bull\tt\longrightarrow V=25(78)(55)

\\ \bull\tt\longrightarrow V=107250cm^3

\\ \bull\tt\longrightarrow V=10.72m^3

Now

Mass=5.5kg

\\ \bull\tt\longrightarrow Density=\dfrac{Mass}{Volume}

\\ \bull\tt\longrightarrow Density=\dfrac{5.5}{10.72}

\\ \bull\tt\longrightarrow Density=0.5kg/m^3

Density of water=1000kg/m^3

As it is less than density of water it will float on water

8 0
3 years ago
Who was Charles Darwin and what theory is he best known for?
Alona [7]

Answer:

Charles Darwin, in full Charles Robert Darwin, (born February 12, 1809, Shrewsbury, Shropshire, England—died April 19, 1882, Downe, Kent), English naturalist whose scientific theory of evolution by natural selection became the foundation of modern evolutionary studies.

Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.

Explanation:

please mark me brainliest please

8 0
3 years ago
What is ppm?
elena-s [515]

Answer:

What does ppm mean? This is an abbreviation for "parts per million" and it also can be expressed as milligrams per liter (mg/L). This measurement is the mass of a chemical or contaminate per unit volume of water. Seeing ppm or mg/L on a lab report means the same thing.

that is all i have to say.

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Please help me answer your questions about how I feel you have a good time to carbon dinosaurs in the past and
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