Factor the following expression using the GCF: 2dr – 4r. r(2d – 4)
2r(d – 2)
2(dr – 2r)
2r(d – 1)\

What is the maximum number of electrons that an atomic orbital can contain?

How hot is the suns corona? (integrated science)

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?