An object has a mass of 26.94 grams and a volume of 2.568 cubic centimeters. what material is it likely to be made of? substance iron gold silver copper density (g/cm3) 7.874 19.32 10.49 8.92

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

How many atoms or molecules are there in a mole of a substance?

Plz a person walks 1 mile every day for exercise, leaving her front porch at 9 am and returning to her front porch at 9: 25 am what was the total displacement of her daily walk a. 1 mile b. 0 c. 25 min d. none of the above