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m_a_m_a [10]
3 years ago
7

The speed of sound in a container of gas at 20.0°C is v. If the temperature of the gas is increased to 80.0°C, the new speed wil

l be?
Chemistry
1 answer:
Rufina [12.5K]3 years ago
5 0

Answer : The new speed will be, 1.098v

Explanation :

The formula used for speed of sound in a container of gas is:

c=\sqrt{\frac{\gamma RT}{M}}

where,

c = speed of sound

R = gas constant

\gamma = adiabatic constant

T = absolute temperature

M = molecular mass of gas

As, c\propto \sqrt{T}

or, we can say that

\frac{c_1}{c_2}=\sqrt{\frac{T_1}{T_2}}            .............(1)

Given:

T_1 = 20.0^oC=273+20.0=293K

T_1 = 80.0^oC=273+80.0=353K

c_1 = v

Now put all the given values in the above formula 1, we get:

\frac{v}{c_2}=\sqrt{\frac{293}{353}}

c_2=1.098v

Thus, the new speed will be, 1.098v

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3 years ago
How many moles are in 3.24 x 1020 particles of lead? (show work plz)
lesya [120]
<h3>Answer:</h3>

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<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
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<u>Atomic Structure</u>

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<u>Stoichiometry</u>

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<u>Step 1: Define</u>

3.24 × 10²⁰ particles Pb (lead)

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<u>Step 3: Convert</u>

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3 years ago
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Hence, according to this law the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

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The final reaction is as follows:  

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