0.15 g of magnesium turnings and stir bar were placed in a 25-mL round-bottom flask connected to a drying tube via Claisen head 0.70 mL (1.1019 g) of bromobenzene and 20 mL anhydrous ethyl ether were added to a 50-mL Erlenmeyer flask. 1 mL of reaction mixture was added to the round-bottom flask and heated until magnesium is fully dissolved. Remaining reaction mixture was added to the flask and continued to heat to reflux for 15 minutes. After reflux, the flask was removed from heat to cool with stir only. would you call the round bottom flask a mixture or solution?
a) Mixture
b) Solution
c) Neither
d) Insufficient information to determine