A 752g sample of an unknown substance has its temperature increase by 8°C after being exposed to 1287.424 j, calculate the specific heat of the substance. J/g*C (3 sig figs)

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

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.

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false