The empirical formula of a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. The molar mass of lindane is 290.8 g/mol. How many atoms of carbon does a molecule of lindane contain?

White phosphorus has the molecular formula p4 and sulfur has the molecular formula s8. how many grams of white phosphorus contain the same number of molecules as 6.41 g of sulfur?

A sugar cube in a test tube is heated over a Bunsen burner. The sugar cube turns black and has less mass than before it was heated. These changes occur because the sugar has- A. become hydrated B. reacted chemically C. melted D. boiled

Which of the following best describes an orbital? a) a space in an atom where an electron is most likely to be found b) space where electrons are unlikely to be found in an atom c) space which may contain electrons, protons, and/or neutrons d)

How is it that when a salt sample dissolves in water, the delta S for the process is positive?

Which hybrid orbitals would be formed if one s orbital and three p orbitals combined? sp sp2 sp3 sp4

It is thought that organelles of eukaryotic organisms, such as mitochondria and chloroplasts (in plant cells) came from

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?

Which element has atoms that can form single, double, and triplecovalent bonds with other atoms of the same element? (1) hydrogen (3) fluorine (2) oxygen (4) carbon