H₂O + Chly ACTIVITY 19 Spend about 10 minutes on this activity. Write balanced chemical equations for the following reactions. Include state symbols. 1. Sodium metal reacts with cold water to give sodium hydroxide solution and hydrogen gas. 2. Calcium carbonate decomposes to give calcium oxide and carbon dioxide. 3. Nitrogen gas and hydrogen gas react to give ammonia gas.​

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.