Write the balance equation for the nitration of toluene.

The quantum mechanical model of the atom was developed by Erwin Schrödinger. The correct option is B

What is Erwin Schrödinger theory?

Austrian physicist Erwin Schrödinger created the quantum mechanical model of the atom in 1926. The development of quantum mechanics, a fundamental physics theory that describes how matter and energy behave at the atomic and subatomic scales, was significantly aided by Schrödinger's work.

The behavior of electrons in atoms was mathematically described by Schrödinger's wave equation, which combined wave-like and particle-like characteristics. His work transformed our understanding of the atomic universe and formed the basis for contemporary quantum theory, along with the contributions of other scientists like Werner Heisenberg and Max Planck.

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Answer: option (1) the atomic mass in grams.

Explanation:

1) The atomic mass is the mass in grams of one mole of atoms.

2) Hence, it is always the atomic mass of an element equal to the mass of one mole of atoms of such element. Therefore, the atomic mass of Au is the mass of one moles of atoms of Au.

3) Here are some examples:

i) Atomic mass of gold: 196.67 g/atoms, means that 196.97 grams of Au is one mole of Au.

ii) Atomic mass of hydrogen: 1.008 g/mol, means that 1.008 grams of H is one mole of H.

iii) Atomic mass of oxygen: 15.999 g/mol, means that 15.999 grams of O is one mole of O.

iv) Atomic mass of lead: 207.2 g/mol, means that 207.2 grams of Pb is one mole of Pb.

Now you see it, the atomic mass in grams of an element is equal to one mole of the element.

The Sun's location in the Milky Way, specifically in the Orion Arm, about 26,000 light years from the center.

Our Sun is located in the spiral part of the Milky Way galaxy. More specifically, it is found in one of the galaxy's spiral arms, known as the Orion Arm, or sometimes the Orion Spur.

The Milky Way consists of several components: the halo, bulge, disk, and spiral arms. The center, or bulge, contains older stars and a supermassive black hole. The halo contains globular clusters, while the disk contains stars of various ages, gas, dust, and the spiral arms, which have a higher density of gas and dust.

In contrast, our Sun is located about 26,000 light years from the center in the disk, residing in one of the spiral arms where star formation is quite active.

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