A scientist mixed two samples together: a colorless liquid that melts at 12°C and a
yellow solid that melts at 390°С. She
analyzed the results and found two ending
substances. One of the ending substances
was a gray solid. This ending substance is
made up of the repeating group of atoms
shown above. Which of the diagrams to the
left shows the repeating groups of atoms
that make up the samples the scientist
mixed together?

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

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

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.