Answer:
A feasible error could have been the removal of the sample before all water evaporated.
Explanation:
In order to determine the percentage of water in an hydrate, an experiment that could be performed is the heating of the sample until the mass does not change. If the student heated the sample an insufficient amount of time, water will be present in the sample, thus reducing the percentage reported.
Answer:
B and C
Explanation:
<em>(A) AgNO₃ + NaCl → AgCl + NaNO₃</em>
This is a double displacement reaction. It is not a redox reaction because the elements have the same oxidation numbers on both sides.
<em>(B) Cl₂ + H₂O → HClO + HCl</em>
This is a redox reaction.
Cl₂ is oxidized to HClO. The oxidation number of Cl increases from 0 to +1.
Cl₂ is reduced to HCl. The oxidation number of Cl decreases from 0 to -1.
<em>(C) CuO + CO → CO₂ + Cu</em>
This is a redox reaction.
CO is oxidized to CO₂. The oxidation number of C increases from +2 to +4.
CuO is reduced to Cu. The oxidation number of Cu decreases from +2 to 0.
<em>(D) NaOH + HCl → NaCl + H₂O</em>
This is a double displacement reaction. It is not a redox reaction because the elements have the same oxidation numbers on both sides.
Can you show a picture so I can help??? :)
I think the answer is : 1
Answer:
it's not
Explanation:
gasoline is not soluble in water in gasoline is a complex mixture of nonpolar compounds such as long-chain hydrocarbons etc water is a polar molecule as a result of the gasoline molecules cannot enter water and borla solution
