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horsena [70]
4 years ago
8

What is Avogadro’s number?

Chemistry
2 answers:
Evgen [1.6K]4 years ago
8 0

Answer:

C

Explanation:

Ed2020

denis-greek [22]4 years ago
3 0
Avagadros number is the number of atoms, molecules, ions, formula units or other particles in a mole of a substance
correct answer is C.
Avagadros number states that 1 mol of any substance is made of 6.022 x 10²³ units. These units could be atoms making up elements or molecules making up a compound. 1 mol of any substance is made of the same number of units. 
Moles are used to measure the amount of substance in a material 
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pickupchik [31]

Answer:

1.Fill in the blank with the correct term to make the statement true.

During the (night)

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(slower)

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2.Which statement is true about winds?

Winds always blow from low to high pressure.

true

Winds always blow from water to land.

false

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false

3. Winds always blow from high to low pressure. How do landmasses impact the movement of air and water?

They stop all movement of both air and water.

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think this is it

They slow down the air but speed up the water.

pt:2

answering the pictures

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Explanation:

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3 0
3 years ago
Read 2 more answers
Which characteristic might identify a substance as an Arrhenius acid?
goldfiish [28.3K]
Historically, the first chemical definition of an acid and a base was put forward by Svante Arrhenius, a Swedish chemist, in 1884. An Arrhenius acid is a compound that increases the H+ion concentration in aqueous solution. The H+ ion is just a bare proton, and it is rather clear that bare protons are not floating around in an aqueous solution. Instead, chemistry has defined the hydronium ion(H3O+) as the actual chemical species that represents an H+ion. H+ ions and H3O+ ions are often considered interchangeable when writing chemical equations (although a properly balanced chemical equation should also include the additional H2O). Classic Arrhenius acids can be considered ionic compounds in which H+ is the cation. Table 12.1 "Some Arrhenius Acids"lists some Arrhenius acids and their names.


contains hydrogen atoms. This is answer
6 0
3 years ago
A helium balloon has a volume of 36 L. The pressure of the helium gas in the balloon is 132 kPa and its temperature is 27 degree
Verdich [7]

Answer:

n =1.905mol

Explanation:

Hello!

In this case, by considering helium gas as an ideal one, we can use the following equation:

PV=nRT

Whereas P should go in atmospheres and T in Kelvins; thus we proceed as follows:

n=\frac{PV}{RT}=\frac{132kPa*\frac{1atm}{101.325kPa}*36L}{0.08206\frac{atm*L}{mol*K}(27+273)K} =1.905mol

Best regards!

3 0
3 years ago
A sample of oxygen gas has a volume of 5.60 l at 27°c and 800.0 torr. how many oxygen molecules does it contain?
ratelena [41]
<span>1.44x10^23 molecules of oxygen gas The ideal gas law is PV = nRT where P = pressure (800.0 Torr) V = volume (5.60 L) n = number of moles R = Ideal gas constant (62.363577 L*Torr/(K*mol) ) T = absolute temperature (27C + 273.15 = 300.15 K) Let's solve for n, the substitute the known values and solve. PV = nRT PV/RT = n (800.0 Torr*5.60 L)/(62.363577 L*Torr/(K*mol)*300.15 K) = n (4480 L*Torr)/(18718.42764 L*Torr/mol) = n 0.239336342 mol = n So we have 0.239336342 moles of oxygen molecules. To get the number of atoms, we need to multiply by avogadro's number, so: 0.239336342 * 6.0221409x10^23 = 1.44x10^23</span>
8 0
3 years ago
Under which conditions would the solubility of a gas be greatest? A. high pressure and high temperature B. high pressure and low
LiRa [457]

Answer:

High pressure and low temperature.

Explanation:

8 0
3 years ago
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