Which of the following elements would be considered a nonmetal?

fluorine (#9)

silicon (#14)

cobalt (#27)

sodium (#11)

Which parameter is measured directly in a coffee-cup calorimeter? pressure heat of fusion temperature kinetic energy

How many chemical bonds would you expect "ekasilicon" to form? and what atomic mass would you expect "ekasilicon" to have? why?

Write the full ground state electron configuration of o2.

What is the mass in grams of a sample of 1.20 x 10 22 atoms of mercury?

What chemicals make up the sides or backbone of the dna molecule

How is the Gobi Desert different from the Sahara Desert

Which average wind speed do areas need to effectively power wind farms? A:1 mph B:5 mph C:10 mph D:16 mph

What is the total number of moles represented by 20 grams of CACO3 A. 0.1 B. 0.2 C. 1 D. 2

Which describes the polarity in a water molecule? a). partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms b).

To what temperature in kelvin will a 2.3 L balloon have to be heated to expand to a volume of 400 L Assume the initial temperature of the balloon is 25 degrees celsius.