Por qué los experimentos de Mendel fueron importantes para la ciencia

What is important to study for nios grade 12 chemistry? i have only one month left.

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

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?