Percent by mass =
(100) times (mass of the ingredient of interest) divided by (mass of the whole mixture)
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Percentage error = Value experimental-Value acceptedValueaccepted x 100
E = mc^2
this scientific equation is used to describe how a small amount of mass or matter can release a huge amount of energy. now in this equation e means energy while m means mass and c2 means speed of light 2
density = mass/volume
Because. The variable M is already used in an equation for mass.