Answer:
<h3>The answer is 1.71 %</h3>
Explanation:
The percentage error of a certain measurement can be found by using the formula
From the question
actual mass = 200 g
error = 200 - 196.59 = 3.41
We have
We have the final answer as
<h3>1.71 %</h3>
Hope this helps you
Answer:
A. manganese change from +7 to +2
Explanation:
Reduction means a gain of electrons, which means the oxidation number will go down or the charge goes down basically or become more negative charge. On the left, Mn has +7 in MnO4-. On the right, it has 2+, so it has been reduced.
Copper 2
Just like you how you would say Cu(I) as copper one, you would say Cu(II) as copper two. Nothing fancy.
The answer to this question should be Carbon dioxide.
To count the molar mass you need to add all the atoms weight that made up the compound. Carbon dioxide or CO2 is made of one carbon and two oxygen. Carbon molecular weight is 12. Oxygen molecular weight is 16. Then if you add them you will got: 12+ 2*16= 12 +32 = 44 g/mole.