How are rechargeable batteries recharged? a. Adding new reactants c. Passing electric charge through the reactants b. Changing to terminals d. Changing out the electrolytes

Classify these molecules as polar or nonpolar.

Which of the following substances is most likely to have a pH close to 7? Select one: a. antacid b. baking soda c. lemon d. vinegar

When you slide a box across the floor what force must your push be stronger than?

In a certain organic compound, one of the carbon atoms is bonded to three atoms. One of these is a carbon atom and the other two are hydrogen atoms. What type of bond exists between the two carbon atoms? Double Covalent Ionic Ion Dipole

Water containing more than 3.0 grains of dissolved solids per gallon is considered to be hard [1 grain (gr) = 64.8 mg]. So, if a kettle contains 18 gal of tap water, which is allowed to evaporate. The solid material left behind has a mass of 1.7 g.

Choose the correct answer from the options given. Ethanol can react with hydrochloric acid to form chloroethane and water. When sulfuric acid is added, the reaction proceeds more quickly.

You have a balloon that is filled with 1000 cm3 of air. The balloon is inside your house where the temperature is 20°C. You take the balloon outside where the air temperature is 10°C.

12.5M AgNO3 is made using 3.5L H2O. How many grams AgNO3 are needed to produce the solution?

What is the net charge on an ion that has 9 protons, 11 neutrons, and 10 electrons? (1) 1 + (3) 1- (2) 2 + (4) 2-

The structure of the periodic table is based on the distribution