You hear a thunder 4 seconds after you see the lightening. How far away is the storm?

1372m

Explanation:

d (distance of the storm) =?

t (time) = 4secs

V (velocity of sound in air) = 343m/s

The distance can be obtained by the following equation:

Velocity = Distance /time

distance = Velocity x time

distance = 343 x 4

distance = 1372m

Therefore, the storm is 1372m away

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

answer; talc and gypsum;