2. Theo observes a star. He observes it at 9:00 P. M. on September 9. When will the star be in the same position, at the same exact time of night again?
A. one day later
B. one week later
C. one month later
D. one year later

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?