Round off 0.0008769 to three significant digits.

The weight percent of concentrated HClO4 (aq) is 70.5% and its density is 1.67 g/mL. What is the molarity of concentrated HClO4

What is the best way to compare a concentrated solution to a dilute solution, given the same volume of solution? The concentrated solution has less solute than the dilute solution.

Why does magnesium citrate say to discard after 24 hours?

What does pH measure? A. The acidity of a solution B. The ionic strength of a solution C. The rate of a chemical reaction D. The hydrogen atoms in a molecule

The government is exploring many new green technologies in order to produce energy. One example is the wind turbine. As the wind passes by, the blades move which turns a generator and produces energy.

What does it mean when a mineral has a definite chemical composition? Select 2 choices. It always occurs in pure gorm. It always contains certain elements. It cannot form from living or once living materials.

During Trial 2, what allowed you to determine that aluminum was the limiting reactant? Check all that apply. All of the copper dissolved. The solution turned clear All of the aluminum dissolved.

49.7 mL of a solution of NaOH is needed to neutralize a solution that contains 1.86 g of H2504 in 20.00 mL of water. What is the molarity of the NaOH solution? H2SO4 + 2 NaOH - -> 2H2O + Na2SO4 1) 0.763 M 2) 0.0404 M 3) 1.13 M 4) 0.481 M 5) 0.

Which of the following is true about lonization? The ionic substances donate some of their atoms to the solvent. The covalent substance breaks apart into ions. The ionic substance breaks apart into ions.

Potassium iodide reacts with lead (II) nitrate in this precipitation reaction: 2 KI (aq) + Pb (NO3) 2 (aq) → 2 KNO3 (aq) + PbI2 (s) What minimum volume of 0.200 M potassium iodide solution is required to completely precipitate all of the lead in 155.