Which element when combined with chlorine would most likely form an ionic compound.

The recommended daily calcium intake for a 20-year-old is 1,000 milligrams (mg). one cup of milk contains 299 mg of calcium and one cup of juice contains 261 mg of calcium. which of the following inequalities represents the possible number of cups of milk m and cups of juice j a 20-year-old could drink in a day to meet or exceed the recommended daily calcium intake from these drinks alone?

What is the missing step in this proof? scroll down to see the entire proof.u

Late at night some traffic signals change patterns and become ?