How much CaCl2, in grams, is needed to make 2.0 L of a 3.5M solution?

Ethan pushes a wooden box across a carpeted floor. Then he pushes the same box across a smooth marble floor. Why does Ethan find it easier to push the box on the marble floor than on the carpeted floor?

Which of the following naming rules would apply to CaCO3? metal cation + nonmetal anion (ide) metal cation + (roman numeral valence) + nonmetal anion (ide) polyatomic cation + nonmetal anion (ide) metal + polyatomic anion

What is the mass of 2.56 * 10-4 moles of Fe2O3? : 6.23 * 105 159.6 g 1.60 * 0-6 g 4.09 * 10-2 g

Which of the following pairs of formulas have the same empirical and molecular formulas? a. C2H4O2 and CH20 O b. CH2 and CH4 Oc. C6H6 and CH4 Od. CO2 and SO2

How many grams of NaC2H3O2 are needed to prepare 350. mL of a 2.75 M solution? (molar mass of NaC2H3O2 = 82.04 g/mol)

Approximately what volume do 3.0 moles of kr gas occupy at stp? 80.0 40.0 l none of the above 20.0

What is the correct formula when Aluminum and Nitrogen are combined? a. Al3N b. AlN c. AlN3 d. Al2N

1-Bromobutane reacts with water to form 1-butanol according to the following equation. C4H9Br (aq) + 2 H2O (l) → C4H9OH (aq) + H3O + (aq) + Br - (aq) The following is a proposed mechanism for the reaction.

Which of the following statements is true? A. Transverse waves move particles parallel to the direction of energy. B. Longitudinal waves move particles at right angles to the direction of energy. C.

The electron configuration 1s22s22p63s23p6 represents which noble gas?