A student performed an investigation to see what would happen when an iron nail is added to a copper sulfate solution Before and after photos of the reactants and products are shown in Chart 1. Use information from Chart 1 to answer the
question below.
True or False.
The properties of the reactants in this investigation did not change.
True
False

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.

How many grams of mgbr2 are needed to produce 75g or metal?

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?