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slega [8]
3 years ago
12

Volatility and vapor pressure are ________. Volatility and vapor pressure are ________. not related directly proportional to one

another both independent of temperature the same thing inversely proportional to one another
Chemistry
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

directly proportional to one another

Explanation:

Volatility refers to how quickly a substance changes from liquid to gas.

If a substance has a high vapour pressure, the substance is highly volatile. Similarly, if a substance has a low vapour pressure, then the substance is much less volatile.

This implies that volatility and vapour pressure gives a direct proportionality.

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In a reduction half-reaction, which amount is shown?
eduard
ODghe number of electrons needed balance
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3 years ago
A 55.0-kg skydiver free falls for a period of time before opening his parachute. what is his kinetic energy when he reaches a ve
morpeh [17]
The kinetic energy of a moving object is calculated through the equation,
                                 KE = 0.5mv²
where KE is kinetic energy, m is mass, and v is the velocity. Substituting the known values in the problem above,
                                KE = 0.5(55 kg)(16 m/s)²
                                KE = 7,040 J
Thus, the kinetic energy of the skydiver is approximately equal to 7 kJ. 
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3 years ago
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PLEASE HELP! this is a science test/quiz I’m pretty sure the answers are on the bottom if not please comment so I can tell you t
bearhunter [10]
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4 0
3 years ago
The energy E of the electron in a hydrogen atom can be calculated from the Bohr formula:
uysha [10]

Answer:

The wavelength of the line in the absorption line spectrum of hydrogen caused by transition is 657.1 nm.

Explanation:

Energy of the electron in a hydrogen atom in nth shell:

E=\frac{-R_y}{n^2}

R_y=2.178\times 10^{-18} J

Energy of an electron in n = 2:

E_2=\frac{-R_y}{2^2}=-\frac{R_y}{4}

Energy of an electron in n = 3:

E_3=\frac{-R_y}{3^2}=-\frac{R_y}{9}

Energy difference in between both the shells:

\Delta E=E_3-E_2 :

=-\frac{R_y}{9}-(-\frac{R_y}{4})=\frac{5R_y}{36}

\Delta E=\frac{5R_y}{36} =\frac{5\times 2.178\times 10^{-18} J}{36}

=3.025\times 10^{-19} J

\Delta E=3.025\times 10^{-19} J=\frac{hc}{\lambda}

\lambda =\frac{hc\times 36}{3.025\times 10^{-19} J}

=\frac{6.626\times 10^{-34} J s\times 3\times 10^8 m/s}{3.025\times 10^{-19} J}

\lambda =6.571\times 10^{-7} m=657.1 nm

1 m = 10^9 nm

The wavelength of the line in the absorption line spectrum of hydrogen caused by transition is 657.1 nm.

8 0
4 years ago
Chlorophyll is essential to photosynthesis because it traps the _______________ needed.
AveGali [126]

Your answer is D.

Chlorophyll traps in the sunlight needed for the process known as 'photosynthesis' .

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3 years ago
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