2. A golf cart battery holds about 1 kWh of energy. At an open air concert, the band uses the golf cart to power their sound system, which consumes 200 W, and their light show, which consumes 300 W. For how long can the band play? (A) 2 hours (B) 3 hours (C) 1 hour (D) 20 minutes 3. The diameter of a nucleus in an atom is (to within a factor of 5) (A) 100 times smaller than the diameter of the atom (B) too small for scientists to measure (C) about 1% of the diameter of an atom (D) 100,000 times smaller than the diameter of the atom 4. The atomic mass of a mystery molecule is 114. What is a possible chemical formula for the molecule? (A) C8 H18 (B) C8O₂ H10 (C) C18 H18 (D) C18 O2 H8
Quantum mechanics and hydrogen atom
Consider an electron of mass m moves with the velocity v in a hydrogen atom. If an electron is at a distance r from the proton, then the potential energy function of the electron can be written as follows:
Isotopes of Hydrogen Atoms
To understand isotopes, it's easiest to learn the simplest system. Hydrogen, the most basic nucleus, has received a great deal of attention. Several of the results seen in more complex nuclei can be seen in hydrogen isotopes. An isotope is a nucleus of the same atomic number (Z) but a different atomic mass number (A). The number of neutrons present in the nucleus varies with respect to the isotope.
Mass of Hydrogen Atom
Hydrogen is one of the most fundamental elements on Earth which is colorless, odorless, and a flammable chemical substance. The representation of hydrogen in the periodic table is H. It is mostly found as a diatomic molecule as water H2O on earth. It is also known to be the lightest element and takes its place on Earth up to 0.14 %. There are three isotopes of hydrogen- protium, deuterium, and tritium. There is a huge abundance of Hydrogen molecules on the earth's surface. The hydrogen isotope tritium has its half-life equal to 12.32 years, through beta decay. In physics, the study of Hydrogen is fundamental.
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