How many moles are equal to 4.0x10^23 atoms of carbon (C)?

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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

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?