How many moles are in 1x10^9 molecules O2

A complete soil profile includes three layers- A. topsoil, midsoil, and bottomsoil. B. drysoil, wetsoil, and thicksoil. C. topsoil, subsoil, and parent material. D. richsoil, parent material, and subsoil.

What is a chemical change? A.) Splitting water into hydrogen and oxygen B.) Breaking a block of solid ice into smaller pieces C.) Freezing liquid water D.) Boiling water

What has the highest ionization energy? calcium, beryllium or magnesium

Which of the following is most likely to be found in a crystalline structure concrete glass plastics quartz

Which type of substance can conduct electricity in the liquid phase but not in the solid phase? metallic element molecular compound nonmetallic element ionic compound

Which of the following gases is produced by a storage battery when it's charging?

Ann and Carol each lift the timber with a force of 80 kg/m/s2. If they lift the timber a distance of 1.25 meters, how much work is each woman doing? Question 1 options: 64.00 J 78.75 J 81.25 J 100.00 J

If there are 2.54cm in an inch, how many inches are in 14.8cm?

Given the reaction: 2 Na (s) + Cl 2 (g) → 2 NaCl (s) The conversion factor for chlorine gas to sodium chloride is: 1 mol Cl 2 ≡ 2 mol NaCl. True or false?

Taking a cross section of a fiber can reveal what?