A solution is present in a test tube, but the test tube is not labeled. It could be Ni2+ or Fe3+ What reagent could you add to the solution to determine what it contains during group 3A metal cation analysis?

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon