Chemistry, 14.01.2021 18:00 lovemichelle638
The law of conservation of mass states
a) matter can be created and destroyed but does not change forms
b) the mass of all substances present before a chemical change equals the mass of all the substances remaining after the change
c) in a chemical reaction, efforts should be made to preserve rare elements without changing them.
d) in a chemical reaction, the final mass of the products is always greater than the starting mass of the reactants.
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4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:
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The law of conservation of mass states
a) matter can be created and destroyed but does not change f...
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