if you have a mixture of argon gas and helium gas that has a total pressure of 67 atm, and id we know that helium makes up 28% of the mixture, what will be the partial pressure of helium?

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!