The reaction of solid zinc metal and hydrochloric acid produces zinc chloride and hydrogen gas as shown below. How many grams of zinc metal would I need to produce 45 mL of hydrogen gas at a pressure of 2.736 atm and 27°C? Zn(s) + HCl(aq) à ZnCl2(aq) + H2(g)

(unbalanced)

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm

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.