Suppose you were given four (4) test tubes, labeled A, B, C, and D. Each containing a colorless solution. In each of the following questions (1-3), indicate which of the solutions listed could be used to distinguish between the pairs of solutions. Use your solubility rules to help you make a choice. 1. Test tube A contains 0.1M NaNO3 solution and test tube B contains 0.1M Ba(NO3)2 solution. K2SO4 KBr KC2H3O2 KCl

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.