Answer:The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products. ... There are two oxygen atoms in the reactants and two atoms of oxygen in the product.
Explanation:
Endothermic reactions. These are reactionsthat take in energy from the surroundings. The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to get colder
Answer:
500g because 300g is less dense than 500g its kinda like a weight
Explanation:
i
<span>hydrogens average atomic mass = 1,01u
x = isotope about mass </span><span>(1.0078u)
y = isotope about mass </span><span>(2.0140u)
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x + y = 100%
so:
x = 100% - y
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answer:
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