To determine the number of atoms in one mole of MgCl2 (magnesium chloride), you can use Avogadro's number, which is approximately 6.022 x 10^23 atoms/molecules per mole.

First, you need to calculate the molar mass of MgCl2.

Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.

Chlorine (Cl) has an atomic mass of approximately 35.45 g/mol (rounded to two decimal places).

Now, add the atomic masses of one magnesium atom and two chlorine atoms to find the molar mass of MgCl2:

MgCl2 molar mass = (1 x Mg atomic mass) + (2 x Cl atomic mass)

MgCl2 molar mass = (1 x 24.31 g/mol) + (2 x 35.45 g/mol)

MgCl2 molar mass = 24.31 g/mol + 70.90 g/mol

MgCl2 molar mass = 95.21 g/mol

So, the molar mass of MgCl2 is approximately 95.21 g/mol.

Now, using Avogadro's number, you can calculate the number of atoms in one mole of MgCl2:

Number of atoms in 1 mole of MgCl2 = 6.022 x 10^23 atoms/molecules per mole

Now, divide this by the molar mass of MgCl2 (95.21 g/mol):

Number of atoms in 1 mole of MgCl2 = (6.022 x 10^23 atoms/mol) / (95.21 g/mol)

Number of atoms in 1 mole of MgCl2 ≈ 6.32 x 10^21 atoms

So, there are approximately 6.32 x 10^21 atoms in one mole of MgCl2.

Mercury is a metal element which is liquid at room temperature

Snail

This is the element Carbon.

Carbon has three isotopes, of which carbon -12 is the most common.

It is composed of : -

C-12 ; 6 protons, 6 neutrons, ( 6+6 = 12) and 6 electrons.

The other isotopes of carbon are#

C-13 ; 6 protons, 7 neutrons, ( 6+7=13) and 6 electrons

C-14 ; 6 protons, 8 neutrons, (6+8=14) and 6 electrons.

Tea is neither an element nor an atom. It's a complex mixture of various substances, primarily water, tea leaves, and other flavor compounds. Elements are the simplest substances, like oxygen or carbon, made up of only one type of atom. Atoms are the building blocks of matter. In tea, you'll find a combination of different atoms from elements like carbon, hydrogen, and oxygen, forming molecules that give tea its unique taste and aroma. So, tea is a delightful blend of many atoms and molecules, making it a tasty beverage.

1 mole of any substance has 6.022 x 1023 atoms. Therefore, two moles would have

2 x 6.022 x 1023 atoms.

CaF2

In elemental form, eight sulfur atoms combine to form a cyclic octatomic molecule with covalent bonds between sulfur atoms in a ring structure. It has molecular formula S8, and is called Octasulfur. It is also the standard allotrope of sulfur.

The symbol of any isotope of carbon is 'C'

There three isotopes of carbon , they are 12.13.& 14.

They are usually shown as 'C-12', 'C-13' & C-14'.

However it is understood as 12C. 13C, & 14C. Although in this written form it can be seen as 12 moles of Carbon etc.,

C-12 is the commonest isotope of carbon

C-13 is used in C-13 magnetic resonce.

C-14 is radio active.

A molecule; the definition is: The smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms; a group of like or different atoms held together by chemical forces.

The number of atoms in CuSO3 is '5'(five)' .

They are

1 x copper (Cu)

1 x sulfur (S)

3 x oxygen (O)

1 + 1 + 3 = 5

Isotopes are atoms of the same element which differ in the number of neutrons they contain. For example, helium-3 (3He), with two protons and one neutron in each nucleus, and helium-4 (4He), with two protons and two neutrons, are two different isotopes of helium. Nearly all elements found in nature are mixtures of several different isotopes. Although the chemical properties of isotopes of the same element are the same, the physical properties differ. The natural proportions of the isotopes are expressed in the form of an abundance ratio.

2n2, where n is the main quantum number (the number of the shell).

2n2, where n is the main quantum number (the number of the shell).

2n2, where n is the main quantum number (the number of the shell).

2n2, where n is the main quantum number (the number of the shell).

The proton is composed of three elementary particles called quarks.

These quarks are influenced by the electromagnetic force and therefore have a charge.

The quark makeup of one proton is 'uud', or 2 up quarks and one down quark.

The charge of a proton is +1 e (as opposed to that of an electron; -1 e)

The charge of an up quark is +2⁄3 e and that of a down quark is -1/3 e.

Therefore you get +2⁄3 e + +2⁄3 e + -1/3 e which amounts to +1 e.

The reason a neutron is neutral is for the same reason.

It's composition is 'udd', or one up quark and two down.

I won't actually write it out again, but when the charge of one up quark and two down is added the charge is 0 e

Since it's not possible to paste images here one has to try to describe that using words. The "O" atom is the central part and is single-bonded to two "Cl" atoms (usually those two "Cl" atoms would be drawn to the left and right of the "O" atom).

Yes, brass is made of two or more materials.

First split salt into its components Na-Sodium and Cl-Chlorine; take a look at the periodic table and you'll see the atomic number (at the top of the box of an element) that number is how many protons are in the element, so you add the atomic number for sodium-11 to the atomic number for chlorine-17 and you get 28 protons all together in salt, that means that you must also have 28 electrons (the number of electrons must be the same as the number of protons). Now to solve for neutrons take a look at the number at the bottom of the periodic table (known as the mass number or amu or atomic mass units-not shown on all periodic tables so you may have to look it up) for Sodium it's 22.98977 and for Chlorine it's 35.4527 now what that means is the weighted average mass of all the isotopes of the element, what you can do is round that number to 23 and 35, then add those two numbers together making 58 ( the total number of protons + neutrons) then subtract 28 from 58 to give you 30 neutrons (though the number of neutrons varies depending on the isotope of the elements 30 neutrons is the most common isotope of salt). That leaves you with a grand total of 28 protons, 28 electrons, and 30 neutrons.

The number of protons in an atom is different for every element. If you look at the periodic table, then the number labeled "atomic number" is the number of protons.

yes. the atomic weight of an atom is determined by how many protons and neutrons it has. determine the number of neutrons by subtracting the atomic number from the atomic mass

4

no, a molecule is composed of 2 or more atoms.

I'm assuming that by "change" you mean alter the quantity thereof. If you want to actually change a proton into a nuetron and eject a positron, that requires a nuclear reaction.

The protons and neutrons are in the nucleus and serve to define the atom, while the electrons orbit the nucleus and ultimately determine the atom's charge. Electrons can be removed or added with a certain amount of energy. This energy is relatively small compared to the massive amounts required to alter the subatomic particles within the nucleus.

The kinds of matter are solid, liquid, and gas.

any time there are as many electrons and protons and they fill each orbital optimally.