False. The principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
<h3>What is Archimedes' principle?</h3>
It is a theory propounded by Archimedes. It opines that a floating body is acted upon by a buoyant force.
The buoyant force is the same as the weight of the fluid displaced by the floating body.
Thus, instead of saying 'the buoyant force is equal to the blank of the fluid displaced', it is actually 'the buoyant force is equal to the weight of the fluid displaced'.
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The substance that will have the largest temperature change
is Iron (Fe). In order to find out which one would have the largest temperature
change, you will need the specific heat of the substances. The specific heat is
inversely proportional to temperature change. Since Iron has the lowest
specific heat, it now has the highest temperature change.
A. The most reactive Non-metals are found at the top of Group 17 (Halogens) in the form of Fluorine and Chlorine
There are 1.2 hr would this current have to be applied to plate out 7. 20 g of iron .
Calculation ,
Given ; Current ( I ) = 5. 68 A
In , the valancy of Fe is +2 .
2 moles of are required for the decomposition of 1 mole of Fe .
7. 20 g of Fe in moles = 7. 20 g /55.845 g/mol =0.12 mole
x moles of are required for the decomposition of 0.128 mole of Fe .
moles of are required = 0.256 moles
Charge on 1 mole of = 96500 C
Charge on 0.256 mole of = 24704 C
Current ( I )= Q/t
t =Q / I = 24704 C/5. 68 A = 4349 sec = 1.2 hr
Therefore , there are 1.2 hr would this current have to be applied to plate out 7. 20 g of iron .
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