Sand (silicon dioxide) and coke (carbon) are combined to form silicon carbide (SiC), a compound used in high-strength ceramic materials. What mass of silicon carbide will be produced from the reaction of 352 g silicon dioxide?

Mass = 235 g

Explanation:

Given data:

Mass of SiO₂ react = 352 g

Mass of silicon carbide formed = ?

Solution:

Chemical equation:

SiO₂ + 3C    →     SiC + 2CO

Number of moles of SiO₂:

Number of moles = mass/ molar mass

Number of moles = 352 g/ 60.08 g/mol

Number of moles = 5.86 mol

Now we will compare the moles of SiO₂ with SiC from balance chemical equation.

                    SiO₂          :            SiC

                      1               :             1

                    5.86           :          5.86

Mass of SiC:

Mass = number of moles × molar mass

Mass = 5.86 mol × 40.11 g

Mass = 235 g

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.