Some fossils provide clues to the environment and climate of the time the organism lived.
Answer:
4.85 x 10⁻¹⁹J
Explanation:
Given parameters:
Wavelength = 410.1nm
Unknown:
The energy of the violet light = ?
Solution:
The energy of a wave can be derived using the expression below;
E = 
h is the planck's constant
c is the speed of light
Insert the parameters and solve;
E = 
= 4.85 x 10⁻¹⁹J
Answer:
0.64 g O₂
Explanation:
I am assuming you meant 0.02 moles of O₂. In that case, convert moles to mass via stoichiometry:
0.02 mol O₂ x 32 g O₂/1 mol O₂ = 0.64 g O₂
Answer:
B.
Explanation:
This is physical change as the popcorn has expanded in size.
Answer:
this is because the van der waals forces or also known as induced dipole-dipole interactions increase because more electrons are present within an atom as you go down
Explanation:
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