Which results in a chemical change? A. A teacher feels a rough cloth

B. A student colors a blue paper

C. A student smells a flower

D. A teacher lights a candle

The length of a vector arrow represents its magnitude and the point represents its direction true or false apex

Think about how you can use le chatelier’s principle to find possible solutions to the design problem. describe at least two ways to increase the yield (amount) of ammonia based on this principle.

Which of the following units is not an official si unit