Examlex
What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J.(mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)
Current
Pertaining to the present time or most recent; also refers to a flow of electricity through a conductor.
Past
Refers to all events or periods that have occurred before the present time, often studied in the context of history to understand patterns of change and development.
Possible
Capable of happening or existing under the right circumstances.
Impossible
That which cannot occur, exist, or be done; a situation or condition not feasible within the current laws of physics or reality.
Q31: Calculate the mass, in grams, of 2.74
Q35: Write the chemical equation for which the
Q64: Write the ground-state electron configuration for S<sup>2-</sup>.
Q69: Find <span class="ql-formula" data-value="\Delta"><span class="katex"><span
Q70: According to VSEPR theory, which one of
Q83: Which of the following elements behaves chemically
Q99: If we take away two electrons from
Q106: In the Haber process, hydrogen gas reacts
Q115: Which should have the longer bond, B<sub>2</sub>
Q115: Assuming the octet rule is obeyed, how