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.

The balanced combustion reaction for butane is,:

$2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

7 0

3 years ago

6th grade work help me please (:

frozen [14]

The trophosphere contains the most water vapor!

3 0

3 years ago

A negative ΔH means an exothermic reaction. <br> True <br> False

slega [8]

True a negative change in enthalpy means an exothermic reaction

7 0

3 years ago

Determine the number of valence electrons in each of the following neutral atoms.

Harlamova29_29 [7]

Answer:

Fluorine = 7 v.e.

Sulfur = 6 v.e.

Oxygen = 6 v.e.

Nitrogen = 5 v.e.

Carbon = 4 v.e.

Explanation:

Valence electrons can be easily determined by understanding groups (columns). Every element in. . .

column 3A (13) = 3 v.e.

column 4A (14) = 4 v.e.

column 5A (15) = 5 v.e.

column 6A (16) = 6 v.e.

column 7A (17) = 7 v.e.

6 0

3 years ago