# How many electrons does the copper ion gain or lose when…

Explanation: At room temperature that 25 °C water is present as in its liquid state. Water exists as solid on 0 °C and below and as gas on 100 °C and above.

Explanation:An ion is formed when an atom either gains electrons(anion) or loose electrons(cation).

Explanation: Gas is one of the state of matter which has no definite shape and size.It takes the shape and size of the container in which it is kept. But gas have definite volume.

Explanation: Sublimation is defined as the process of the conversion of matter from solid state to gaseous state directly by escaping liquid state.

Explanation: Matter is defined as anything which occupies some space and has mass.

Explanation: The particle with positive charge is called proton. Where as particle with negative charge is called  electrons and particle with no charge is called neutron.

Explanation: Mass number = Number of protons + Number of neutrons

24 = 11 + number of neutrons

Number of neutrons = 12

Explanation: Electron are not stationary they are all time moving. so, when the electrons moving in their lowest energy configuration they are said to be ground state

Explanation: Synthesis reaction is defined as those chemical reactions in which two or more than two reactants reacts together to form single product.

A+B+C →D

Explanation:

Dalton’s Atomic Theory

An atom is an indivisible and smallest unit of matter.Atom of same element have similar mass and size.Atoms of different elements differ in size and massChemical reaction means  change in arrangement of atoms.

Explanation: Electron near the nucleus experiences stronger electrostatic forces due to which they posses significantly higher energy than electrons further away.

Explanation: The maximum electron capacity of s orbital is 2.

Where as for p orbital it is 6, for d orbital it is 10 and for f orbital it is 14.

Explanation: An atom retains all the properties of its respective element.

Explanation: Symbol of copper is Cu.

C is for carbon, Ca is for calcium and Pb is for lead.

Explanation: Horizontal rows are called period and vertical columns are called group.

Explanation:

Metals are good conductor of electricity and heat due to presence of metallic bonding . Where as in non metal covalent bonding is present.

Explanation: Electronegativity is defined as the ability to attract the shared pair of an electrons towards itself in bond.

Fluorine being smallest in size and valence electrons are closer to nucleus due to which gain of an electron becomes easier.

Explanation: Ionic bond is the chemical bond in which complete transfer of electron takes place from one atom to another

Explanation:

An electrolyte those compound which when dissolved in water dissociates into ions and make the solution electrical conducting in nature.

Explanation:

[tex]H%=frac{2 g/mol}{98 g/mol}times 100=2.06 %[/tex]

[tex]S% =frac{32 g/mol}{98 g/mol}times 100=32.6 %[/tex]

[tex]O% =frac{64 g/mol}{98 g/mol}times 100=65.3 %[/tex]

Explanation:

Moles of sodium =[tex]frac{3.238 g}{23 g/mol}=0.1407 moles[/tex]

Moles of Sulfur=[tex]frac{2.265 g}{32 g/mol}=0.0707 moles[/tex]

Moles of oxygen =[tex]frac{4.499 g}{16 g/mol}=0.2811 moles[/tex]

Divide number of moles of every element with smallest value of number of moles.

[tex]Na=frac{0.1407}{0.0707}=1.99approx 2[/tex]

[tex]S=frac{0.0707}{0.0707}=1[/tex]

[tex]O=frac{0.2811}{0.0707}=3.9approx 4[/tex]

The empirical formula is [tex]Na_2SO_4[/tex]

Explanation:

Combustion reaction is the burning of organic substance in presence of oxygen gas with release of water , carbon-dioxide ans heat.