Elements are solid, liquid, and gas substances that can be found on Earth. Which statement best describes an
element?

1. Elements can be separated into smaller atoms.

2. Elements are fast moving subatomic particles.

3. Elements are combinations of different atoms.

4. Elements can combine to make living and nonliving things.

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

What are the first three quantum numbers for the electrons located in subshell 2s?

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.