Kc = [H3O+][HCO3-] / [H2CO3]
Remember that Kc is products over reactants. Also, you do not include liquid water in a Kc expression, since liquid water has no concentration.
mass MgCl₂ = mol x MM MgCl₂ = 0.05 x 95.211 g/mol = 4.76 g
mass Cl in MgCl₂ :
= (2 x AM Cl)/MM MgCl₂ x mass MgCl₂
= (2 x 35.5 g/mol)/95.211 g/mol x 4.76
= 3.55 g
% mass Cl in the mixture :
= (mass Cl / mass mixture) x 100%
= 3.55 / 9.8 x 100%
= 36.22%
Answer:
Chemical bond can be define as a force holding atoms firmly together to a form molecules.
Explanation:
Chemical bond is a strong attraction between atoms, molecules or ions that enhance the formation of chemical compounds. The bonds may be due from the electrostatic force of attraction between opposite charged ions or through the sharing of electrons.
Types of chemical bond
There are four types of chemical bonds
- covalent bond
- polar bond
- ionic bond
- hydrogen bond
Ionic bond involves the transfer of an electron which involves one atom receiving and the other giving out
Covalent bond involves the sharing of electrons between two atoms
Polar bonds involves two atoms connected by covalent bonds which may exert different attractions for the electrons in the bond resulting into unevenly charges distribution
Hydrogen bond: this is found mostly in water H2O. They are polarized
U can assume that riding the bus is a faster way to get to school because it is capable of a faster speed than a bicycle
Answer:
C. results when an alkaline-earth metal loses one of its outermost electrons
Explanation:
An ion can be said to result when an alkaline - earth metal loses one of its outermost electrons.
Ions are charged substances that takes part in chemical reaction.
- An an atom is neutral substance that is a component of an element.
- An ion is charged substance.
- In an ion, the number protons and electrons are unbalanced.
- The number of protons in an atom are the positively charged particles.
- The number of electrons are the negatively charged particles.
When there is an inequality between the number of protons and electrons within an atom, an ion forms.
