What is the molecular formula of the compound CH2 with molar mass = 42.0 g/mol?

C4H8

C3H6

C2H4

C2H18

If a substance cant be seperated by physicaly means or chemical means it is a

Balance these equations N2 + O2 > NO

The bohr model is an inaccurate model of the atom because there is no way to measure the exact of an electron in an atom

Balance the following equation and determine the mole ratio of Cl2 to CCl4. CS2 + Cl2 CCl4 + S2Cl2 ) A) 1:1 ) B) 2:4 ) C) 1:2 ) D) 3:1 ) E) 1:3

In comparison of metals to nonmetals, metals tend to have (choose 3) A. higher electronegativity values B. lower ionization energy values C. negative charges D. greater conductivity E. higher ionization energy values F.

The chemical process in which electrons are gained by an atom or ion is called

A lawnmower runs on gasoline. what type of energy transformation takes place in its engine?

Match the following definition to the type of solution it describes. unsaturated solution saturated solution supersaturated solution A. The amount of solute dissolved is less that the maximum amount the solution can hold. B.

What type of decay is illustrated by the equation below?

What is heat energy?