Which of the following is a balanced chemical equation?

1 answer:

8 0

1. Not the first option because there are too many Oxygen molcecules on the right. ( 2O: 3O)

2. Not the second option because, again the oxygen's are not balanced. (6O:8O)

3.Correct! this is a balanced equation as there are equal amounts of all the molecules on each side of the reaction.

4. Not the fourth one because the Magnesium(Mg) are not balanced. (2Mg:1Mg)

Any Questions?

You might be interested in

What the concept of electronic transition

just olya [345]

Electronic transition moments are defined as the probability for a given excitation energy transition to take place. It should be evident that the transition moment depends upon the spin-orbit coupling of the electrons in both the ground and excited states.

Hope this helps :)

Have a great day!

7 0

3 years ago

What is the empirical formula of a compound containing 12 g of carbon, 2 g of hydrogen, and 16 g of oxygen only

Hoochie [10]

Answer:

The empirical formula=CHO. To explain it is C1H1O1 but we don't put the one that's why it is CHO

Explanation:

7 0

3 years ago

A sample substance has the chemical formula:

Agata [3.3K]

Answer:

1,6,8

Explanation:

Periodic Table- H=1.C=6,O=8

Hydrogen is H, Carbon is C, Oxygen is O

7 0

3 years ago

Read 2 more answers

Calcium carbonate forms limestone, one of the most common rocks on Earth. It also forms stalactites, stalagmites, and many other

max2010maxim [7]

Answer: $CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$ , 0.533 L

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

According to avogadro's law, 1 mole of every substance occupies 22.4 L of volume at STP.

Number of moles = $\frac{\text {given mass}}{\text {Molar mass}}$