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3 years ago

A. what is atmospheric pressure?

Chemistry

1 answer:

Vanyuwa [196]3 years ago

6 0

Answer:

What is atmospheric pressure? -------> Atmospheric pressure is a force in an area pushed against a surface by the weight of the atmosphere of Earth, a layer of air.

Why does the atmosphere exert pressure? -------> Because gas particles in the air—like particles of all fluids—are constantly moving and bumping into things, so they exert pressure.

What is the value of atmospheric pressure at sea level, in newtons per square centimeter? -------> Atmospheric pressure at sea level is about 10 N/cm2 or 100 kPa or about 10 m of water or about 760 mm of mercury, but varies with the weather, and of course altitude.

I hope this helps and have a great day!

Explanation:

You might be interested in

What is the mass of silver in 3.4 g AgNo3?

Kruka [31]

The answer is 2.2 g.

First, we need to calculate a molar mass (M) of AgNO₃. The molar mass is a mass of 1 mole of a substance. It is the sum of relative atomic masses (Ar), which are masses of atoms of the elements.
Relative atomic mass of Ag: Ar(Ag) = 108 g
Relative atomic mass of N: Ar(N) = 14 g
Relative atomic mass of O: Ar(O) = 16 g
So, the molar mass of AgNO₃ is:
M(AgNO₃) = Ar(Ag) + Ar(N) + 3Ar(O) = 108 + 14 + 3*16 = 170 g

Now, we can make a proportion:
If 108 g of Ag is in 170 g of AgNO₃, how many silver will be in 3.4 g of AgNO₃:
108 : 170 = x : 3.4

After crossing the products:
x = 108 × 3.4 ÷ 170 = 2.16 g ≈ 2.2 g

4 0

3 years ago

What is a good slogan for antimony

scZoUnD [109]

Antimony: a phenomenal phenomenon

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4 years ago

When a certain powder is mixed into a solution of silver nitrate, a white precipitate forms. When the powder is added to a solut

atroni [7]

Answer:

Ammonium chloride

Explanation:

The powder is:- Ammonium chloride

When mixed with silver nitrate, white prescipitate of silver chloride is formed as:-

$NH_4Cl+AgNO_3\rightarrow NH_4NO_3+AgCl$

When mixed with sodium hydroxide, ammonia gas is formed which has noxious order.

$NH_4Cl +NaOH\rightarrow NH_3 + H_2O + NaCl$

Ammonia gas on reaction with nickel (II) hydroxide forms deep blue colored complex as shown below:-

$Ni(OH)_2(s) + 6NH_3(aq)\rightarrow [Ni(NH_3)_6]^{2+}(aq) + 2OH^{-}(aq)$

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3 years ago

Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the for

Alexus [3.1K]

Answer:

See explanation below

Explanation:

In this case, let's see both molecules per separate:

In the case of SeO₂ the central atom would be the Se. The Se has oxidation states of 2+, and 4+. In this molecule it's working with the 4+, while oxygen is working with the 2- state. Now, how do we know that Se is working with that state?, simply, let's do an equation for it. We know that this molecule has a formal charge of 0, so:

Se = x

O = -2

x + (-2)*2 = 0

x - 4 = 0

x = +4.

Therefore, Selenium is working with +4 state, the only way to bond this molecule is with a covalent bond, and in the case of the oxygen will be with double bond. See picture below.

In the case of CO₂ happens something similar. Carbon is working with +4 state, so in order to stabilize the charges, it has to be bonded with double bonds with both oxygens. The picture below shows.

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4 years ago

Earth is currently 150 million km away from the Sun. If Earth was 200 million km away from the Sun, why would it no longer be ab

timurjin [86]

Answer:

The temperature would be too cold

Explanation:

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3 years ago