Ik its blurry but help..

The minerals found in bones are deposited by living cells called

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

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm