Oxygen by itself is not harmful; , it can become harmful when combined with carbon. * 1 point
however
for instance
in summary
namely

Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '