Answer: If the oxidation number of copper changes from 0 to +2 then yes this is a redox reaction as copper lost 2 electrons and was oxidized.
Explanation:
When an element or atoms loses an electron then it acquires a positive charge.
This charge on an atom represents its oxidation state.
For example,
Here, oxidation number of copper changes from 0 to +2.
A redox reaction in which electrons are removed from an atom or a reaction where an increase in oxidation number of an atom takes place is called oxidation-half reaction. The atom itself gets oxidized.
This means that here copper lost 2 electrons and was oxidized.
Thus, we can conclude that if the oxidation number of copper changes from 0 to +2 then yes this is a redox reaction as copper lost 2 electrons and was oxidized.
1. Transitional fossils tells a story of the relationship between the ancestors and the descendant, this allows scientists to determine or study the common pattern in development. This fossils are also used to prove the Darwin theory of evolution.
2. Yes the synonym of transitional is 'midway' and/or ;middle'. Transitional fossils are fossils that have traits of their ancestor and descendant. Thus these fossils exist between (middle) of their ancestor and descendant.
3. No, I don't think it is possible for all species that ever existed, because some fossils exist in places that humans cannot reach.
It is important in gravimetric analysis to add an excess amount of precipitating ions to a solution containing an analyte because it helps to determine the mass of the analyte.
<h3>What is Gravimetric analysis?</h3>
This is a method which is used in the determination of the quantitative determination of the ion being analyzed(analyte) based on its mass.
Adding an excess amount of precipitating ions to a solution containing an analyte will make it easier for the mass of an analyte to be determined.
It is also important for the precipitate to be a pure substance with a definite and known composition which therefore makes it the most appropriate reason.
Read more about Gravimetric analysis here brainly.com/question/6163057
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Answer:
<h3>The answer is 2.88 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 95g
volume = final volume of water - initial volume of water
volume = 63 - 30 = 33 mL
We have
We have the final answer as
<h3>2.88 g/mL</h3>
Hope this helps you
Answer:
number 2 your welcome good luck