Strontium compounds are often used in flares because their flame colour is bright red. One industrial process to produce low-solubility

strontium compounds (that are less affected by getting wet) involves

the reaction of aqueous solutions of strontium nitrate and sodium

carbonate. Write the balanced chemical equation, total ionic equa-

tion, and net ionic equation for this reaction.

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In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

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