An organic compound, x, will react with calcium metal to produce a salt with the empirical formula
cac4h4o4.
what could be the identity of x?
1 ethanoic acid
2 butanedioic acid
3 2-methylpropanedioic acid

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.

Describe the interaction that occurs between two objects with the same electrical charge.

Determine the reaction and balance the following equations urgent due in the morning