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kicyunya [14]
3 years ago
14

what is the scientific name for the layer of gas that surrounds the earth A. hydrosphere B. biosphere C. atmosphere D. lithosphe

re
Chemistry
2 answers:
horsena [70]3 years ago
7 0

Answer:

hydro

Explanation: hydrogen

Marat540 [252]3 years ago
7 0

Answer:

C. Atmosphere

Explanation:

First, let’s define each answer choice.

Hydrosphere: all of the water on Earth

Biosphere: the global ecosystem where organisms live

Atmosphere: the envelope of gases around the planet

Lithosphere: the outermost part of the Earth( the crust and upper mantle)

The question asks us to find the scientific name for the layer of gas that surrounds the Earth. The best choice is C. Atmosphere.

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If an ideal gas has a pressure of 4.03 atm,
kkurt [141]

Answer:

PV=nRT where P=pressure in atm, V=volume is liters, n=numbber of moles, R=gas constant, 0.08206 L-atm/mole KL, and T=temperature in K (273 + C).  So (5.67atm)(99.39L)=n(0.08206 L-atm/mol.K)(328.94K), solve for n, the number of moles, n=20.9 moles.

Explanation:

7 0
3 years ago
How many grams of H2O are needed to produce 150 g of Mg(OH)2? (Molar mass: H2O = 18.02 g/mol; Mg(OH)2 = 58.33 g/mol )
Nuetrik [128]

Answer:

92.6

Explanation:

6 mol x 18.02 g of H2o --> 3 mol x 58.33 g  Mg(OH)2

108.12 g of h2o --> 174.99 of Mg(OH)2

g of H2O is 150 g of Mg(OH)2

150g x 108.12g / 174.99 =

92.67

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3 years ago
If Lithium and Nitrogen created a bond what would the ratios be?
olga nikolaevna [1]

Answer:

There would be three Lithium atoms per one Nitrogen atom.

3:1

Li3N (Lithium Nitride)

Explanation:

Group 15 elements usually have 5 valence electrons, and every atom wants to have a full valence shell of valence electrons. So, nitrogen can get three electrons from each Lithium atom in order to get a full octet.

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3 years ago
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PLZ HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Tpy6a [65]
This is a lab assignment, you need to do something physically to find your answers
5 0
3 years ago
We consider a spherical air bubble rising through a water tank. The pressurepinside the bubble isequal to its surrounding pressu
DENIUS [597]

The answer is a change in internal energy causes work to be done and heat to flow into the system.  

<u>Explanation:</u>

Boyle's law says, PV=RT

  • Here P represents the pressure, V represents the volume and T represents the temperature. R is a constant. The volume of an ideal gas is inversely proportional to its pressure if the temperature is constant.
  • When a bubble is present in deep water it has water pressure and atmospheric pressure. Then the Volume increases when water pressure raises which is proportional to the depth reduces.
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  • If the bubble travels from the bottom to the top or vice-versa, it's going to lose or gain heat in a way that must be quite hard to measure.
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3 years ago
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