Lemon juice has a pH level of 2, but milk has a pH level of 6. How does the concentration of hydrogen ions in lemon juice compare to the concentration of
hydrogen ions in milk?

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

Your weight on the moon is relative to your weight on earth. neil armstrong weighed 360 lbs. in his moon gear while on the earth, but on the moon he only weighed 60 lbs. how much would a 150 lb person weigh on the moon?

Y=2x+5y complete the missing value in the solution to the equation.