Assuming that the experiment started
with the magnesium and did not combine with oxygen, this extra mass would actually
decrease the amount of oxygen. This is because it only artificially increases
the original mass. Therefore this actually increases the error.
Answer:
<span>too low</span>
Answer:
Your diaphragm contracts and expands
The answer to the question is A
Chemical reaction: Pb(NO₃)₂(aq) + 2KI(aq) → PbI₂(s) + 2KNO₃(aq).
aq(<span>aqueous)
means dissolved in water.
s(solid) means that salt (in this reaction </span>PbI₂) not dissolved in water.
This chemical reaction is double displacement reaction - cations (Pb²⁺ and K⁺) and anions (NO₃⁻ and I⁻) <span>of the two reactants switch places and form two new compounds.</span>
Answer:
It is B
Explanation:
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