A circular metal loop is heated at point O as shown in the figure.
1 answer:
The direction in which the heat would flow in the loop is the direction from O to P and O to R.
<h3>What is a Heat Flow?</h3>This refers to the generation, use, and movement of heat between physical systems.
From the attached image, we can see that the order in which the pins at points P, Q, and R were fixed with the help of wax fall
Therefore, as points O, P, Q, and R are equidistant from each other, the pins at R and P will fail concurrently followed by the pin at Q.
This is because of the heat transfer through convection.
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A titration is defined as 'the process of determining the quantity of a substance A by adding measured increments of substance B, the titrant, with which it reacts until exact chemical equivalence is achieved (the equivalence point)'.
The Molarity of the HCl Solution requires the addition of 24.6 mL of titrant is 0.0836 M (to 3 significant figures)
<h3>What is Titrant?</h3>A reagent solution of precisely known concentration that is added in titration
Given reaction HCl + NaOH ===> NaCl + neutralization reaction
Note that the mole ratio is 1:1 meaning that 1 mole HCl reacts with 1 mole NaOH to produce 1 mole NaCl and 1 mole
Find moles of NaOH used:
18.45 ml x 1 L/1000 ml x 0.085 mol/L = 0.002091 moles NaOH used
This meant that there must be 0.002091 moles of HCl present in the 25.0 mls.
We want to find the molarity (M) which is moles HCl/liter of solution. We know the moles, and we also know the liters of solution (25.0 mls x 1 L / 1000 mls = 0.025 liters)
M = 0.002091 moles HCl / 0.025 liters = 0.08364 M = 0.0836 M (to 3 significant figures)
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