C3h8 + o2 yields co2 + h2o with balancing a chemical equation. need before tomorrow.

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

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)