What is the relationship between law of conservation and chemical reaction?

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

What is the percentage of hydrogen in c2h4

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %