Answer:
OK + MgBR arrow KBR + MG
Explanation:
I know nothing about this topic, but if it has to be balanced I am pretty certain that's the only balanced equation
Answer:
I think it's 3 c only the loudness of the sound
Answer:

Explanation:
The index of refraction is equal to the speed of light c in vacuum divided by its speed v in a substance, or
. For our case we want to use
, which for our values is equal to:

Which we will express with 3 significant figures (since a product or quotient must contain the same number of significant figures as the measurement with the <em>least</em> number of significant figures):

Measuring spoons are used when measuring less than 1/4 cup