Answer:
The correct answer is option is c.
Explanation:
Mass is defined as quantity of the matter contained by the body irrespective of its volume or any other forces acting on it.
Mass of substance Robert has == 4 grams
Mass of same substance Jill has = 10 grams
4 grams < 10 grams
Sample of Jill is more in weight that the weight of the substance of Robert.
Explanation:
It is known that for high concentration of , reduction will take place. As, cathode has a positive charge and it will be placed on left hand side.
Now, = 0 and the general reaction equation is as follows.
3.00 M n = 2 30 mM
E =
=
= 0.038 V
Therefore, we can conclude that voltage shown by the voltmeter is 0.038 V.
Answer:0.005M
Explanation:
First deduce the oxidation and reduction half equations and from that obtain the balanced redox reaction equation. From that, the number of moles of reacting species are seen from the stoichiometry of the reaction from which the number of moles of oxalate is obtained and substituted to obtain the molar concentration of oxalate.
