Round this number to two significant figures. 5,206

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

What substance has a mass of 9.5g and volume of 2.1cm^3

How many moles of bromine are needed to produce 3.23 moles of potassium bromide