two substances are mixed with water: Substance 1: This substance separates and floats on top of the water. Substance 2: This substance sinks to the bottom and remains the same. Which statement is true? Substance 1 is soluble, Substance 2 is insoluble. Substance 1 is insoluble, Substance 2 is soluble. Both of the substances are insoluble. Both of the substances are soluble.

Which of the following best completes the diagram above? a. land ordinance b. northwest ordinance c. revolutionary war d. shays' rebellion

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.

Idont know any of these can anyone me