Item 24 * Which statement is supported by the
chart?
A.
B.
Trains contribute the greatest
to air pollution.
Light and heavy duty
vehicles equally impact air
quality.
Light duty vehicles have the
greatest impact on air
pollution.
Ships account for 25% of air
pollution.
C.
D.

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

Which statement would indicate the presence of an acid

What is dhmo? hint: you find it everywhere something is wet..