Convert 2.84 × 1025 molecules of h2o2 to moles.

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)