Alkanes with a branch coming off the straight chain are identified as substituted alkanes. what would be the name of a straight chain made of 8 carbons with – ch3 groups on the second and fifth carbons?

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.

For lesson: cameras, plant presses, newspaper, paper towels, clip boards, pencils, calculators, field guides, metric measuring tapes, paper, transect squares, colored pencils, ph meters, light meters, computers, etc.for extension: baggies for soil samples collecting, distilled water, hand shovels, beakers, boiled rice, microscopes, well microscope slides or regular microscope slides with cover slips

The answer is  a: x-rays—2 and ultraviolet rays—3.  hope i !