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Yakvenalex [24]
3 years ago
15

The amount of water vapor in the air, compared to the maximum amount that can be held at a specific air temperature is called:

Chemistry
1 answer:
Lisa [10]3 years ago
3 0

Answer: D relative humidity

Explanation: Just took the test.

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g modenr vacuum pumps make it easy to attain pressures of the order of in the laboratory. at a preasusure of 6.75 atm and an ord
Ratling [72]

Answer:

Number of molecules = 1.8267×10^20

Explanation:

From the question, we can deuced that the gases behave ideally, the we can make use of the ideal gas equation, which is expressed below;

PV = nRT

where

P =pressure

V =volume

n = the number of moles

R is the gas constant equal to 0.0821 L·atm/mol·K

T is the absolute temperature

Given:

P = 6.75 atm;

T = 290.0 k,

; V = 1.07 cm³ = 0.001 L

( 6.75 atm)(0.00107 L) = n(0.0821 L·atm/mol·K)(290K)

n = 3.0335167*10^-4 moles

But there are 6.022×10²³ molecules in 1 mole,

Number of molecules = 1.8267×10^20

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3 years ago
If element X has 65 protons, how many electrons does it have
Tomtit [17]
In an atom there are the same number of protons as electrons to start with. The answer would be 65 aswell.

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3 years ago
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Calculate the vapor pressure at 25 ?c of hexane above the solution. the vapor pressure of pure hexane at 25 ?c is 151 torr.
Studentka2010 [4]
One of the many ways in order to solve for the vapor pressure of pure components at a given temperature is through the Antoine's equation which is written below,
                                    P = 10^(A - B/C+T)
where A, B, and C are constants and T is the temperature in °C and P is the vapor pressure in mm Hg. 
For hexane,
                             A = 7.01
                             B = 1246.33
                             C = 232.988

Substituting the known values,
                            P = 10^(7.01 - 1246.33/232.988+25)
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What is typically displayed on the y-axis of a solubility curve
tekilochka [14]
<span>Grams of solute per 100 grams of water</span>
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What are the advantages of having only one SI unit for pressure?
Vanyuwa [196]
<span>www.science.uwaterloo.ca/~cchieh/cact/c120/siunits.html</span>
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