Mass percent= grams solute/ grams of solution x 100
Mass Percent= (50/ 150)x100= 33.3%
The coefficient in a chemical formula represents the amount of each chemical present. The amount of a substance is measured in moles.
Answer: C. no new substances
are formed<span>
</span><span>
<span>In the
physical change of matter, there is no new substance that is formed. It is only
the appearance of the matter that is being changed and not its chemical
composition. Cutting, tearing and grinding are only some of the examples that
exhibit physical change. </span></span>
Sunlight is collected from a renewable resource, which is naturally replenished one a human timescale
In an experiement things that are changing are called variables.