In the equation mgco3 + h2so4 → mgso4 + h2o + co2 , identify the spectator ion(s) for the reaction.

with such great emphasis put on the act and sat exams—the studying, the review sessions, taking the test, retaking the test, scholarships dependent on scores, etc.—many think the scores are the be all end all of college applications. if you have a high score, you can get into any college you want. if you have a low score, you’re doomed.