Which compound contains both ionic and covalentbonds?
(1) CaCO3 (3) MgF2
(2) PCl3 (4) CH2O

Answer:

20322

Explanation:

The carbon atoms bind together to create the compound's framework. Therefore, the name of the hydrocarbon CH(CH)CH is  n-octane.

What is hydrocarbon?

Any member of a group of organic compounds comprised only of the atoms carbon (C) as well as hydrogen (H) (H). The carbon atoms bind together to create the compound's framework, as well as the hydrogen atoms connect to them in a variety of ways.

Petroleum as well as natural gas are mostly composed of hydrocarbons. They are used as fuels and lubricants, as well as raw materials to make polymers, fibers, rubbers, solvents, explosives, various industrial chemicals. The name of the hydrocarbon CH(CH)CH is n-octane.

Therefore, the name of the hydrocarbon CH(CH)CH is n-octane.

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Answer is: n-octane.

Octane is the straight-chain alkane (an acyclic saturated hydrocarbon) with eight carbon atoms.

Carbons in octane have sp3 hybridization (carbon’s 2s and three 2p orbitals combine into four identical sp3 orbitals).

Orbitals in sp3 hybridization have a tetrahedral arrangement and form single (sigma) bonds.

Burning octane fuel is very fast chemical reaction, it happens in immediately.

Main products of the combustion of fossil fuels are carbon(IV) oxide and water.  

Chemical reaction: C₈H₁₈ + 25/2O₂ → 8CO₂ + 9H₂O; ΔH = -5500 kJ/mol.

Answer:

12 moles H2O

Explanation:

Your tools of choice for stoichiometry problems will always be the mole ratios that exist between the chemical species that take part in the reaction.

As you know, the stoichiometric coefficients attributed to each compound in the balanced chemical equation can be thought of as moles of reactants needed or moles of products formed in the reaction.

In your case, the balanced chemical equation for this synthesis reaction looks like this

2H2(g]+O 2(g]→2H2O(l]]

Notice that the reaction requires

2

moles of hydrogen gas and

1

mole of oxygen gas to produce

2

moles of water.

This tells you that the reaction produces twice as many moles of water as you have moles of oxygen gas that take part in the reaction.

You know that your reaction uses

6.0

moles of oxygen. Assuming that hydrogen gas is not a limiting reagent, you can say that the reaction will produce

6.0

moles O

2⋅2

moles H

2O1

moles O

2=

12 moles H2O

Answer:

Explanation:

The difference between the molecule and compound is that molecule is made up of atoms of same element while compound is made up of atoms from different elements.

Molecule:

When the atoms of same elements combine they form molecule. In molecule atoms are combined together by covalent bond.

For example,

H₂ is the molecule of hydrogen in which two hydrogen atoms combined together through covalent bond.

Compound:

When the atoms of different elements combine they form compound. In compound atoms are combined through ionic bond.

For example,

NaCl is compound it is formed by the combination of atoms of sodium and chlorine. The electron form sodium is gained by the chlorine and form ionic bond.

2) A chemical change creates a new species.

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

These may not be observed with naked eye

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood

Boiling of egg: that change the chemical composition of protein in the egg .

The reaction of Hydrogen and oxygen:

H 2 (g)  + O 2  (g) -------------------------------------> 2H2O

Answer:

The difference between a molecule and a compound is that a compound is made up of atoms from  

✔ different elements

.

A chemical change creates a new  

✔ substance

.Explanation: