Siooniometry finding mole ratios from chemical formulae this is the chemical formula for tak the main ingredient in talcum powder): me, (si, o)(oh) an analytical chemist has determined by measurements that there are 426 moles of oxygen in a sample of tale. how many moles of hydrogen are in the sample? be sure your answer has the correct number of significant digts. x 5 ?

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.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5