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Oksanka [162]
3 years ago
12

A sample of 25mls of HCL was mixed with 25mls of KOH of the same concentration in a calorimeter. As a result the temperature ros

e from 25'c to 26.6'c. Given that the enthalpy is -56.02kj/mol for the reaction and the specific heat of the dilute aqueous solution is approximately equal to that of water (4.184j/g'C). Determine the molarity of the original HCL solution.
Chemistry
1 answer:
xxTIMURxx [149]3 years ago
4 0
Ooo that cool good thing I learn from this app
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Can someone help? <br><br> Name the compound:
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use the heisenberg uncertainty principle to calculate the uncertainity in meters in the position of 0.68g and traveling at a vel
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Answer:

7.7439×10⁻³¹ m

Explanation:

The expression for Heisenberg uncertainty principle is:

\Delta x\times \Delta v=\frac {h}{4\times \pi\times m}

Where m is the mass of the microscopic particle

h is the Planks constant

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Δv is the uncertainty in the velocity

Given:

mass = 0.68 g = 0.68×10⁻³ kg

Δv = 0.1 m/s

Δx= ?

Applying the above formula as:

\Delta x\times 0.1=\frac {6.62\times 10^{-34}}{4\times \frac {22}{7}\times 0.68\times 10^{-3}}

<u>Δx = 7.7439×10⁻³¹ m</u>

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