The relation between vapour pressure , enthalpy of vapourisation and temperature is
ln (88/ 39) = DeltaH / 8.314 (1 / 318 - 1 / 298)
0.814 = DeltaH / 8.314 (2.11 X 10^-4 )
DeltaH = -32.07 kJ
Answer:
Given:
Mass = 15.8 g
Volume = 20 cm³
To Find:
Density of unknown substance
Explanation:
Formula:
Substituting value of mass & volume in the formula:
Answer:
hi
Explanation:
protons,electrons and neutrons form atoms and
atoms form molecules
have a nice day
Answer:
A wave with a frequency of 10 Hz and a wavelength of 2 m should have a velocity of 20 meters per second (m/s)
<em>Hope I Helped</em>
<em />
Answer is: the energy of exactly one photon of this light is 4.75·10⁻¹⁹ J.
Photon energy equation: E = h·ν.
E - energy of one photon.
ν- frequency.
h - Planck's constant.
ν = 7.17·10¹⁴ Hz.
h = 6.63·10⁻³⁴ J·s.
E = 6.63·10⁻³⁴ J·s · 7.17·10¹⁴ Hz.
E = 4.75·10⁻¹⁹ J.
