Speed of sound in a gas: dependence on molar mass, gamma and temperature

1. A.
   $4:1$
2. B.
   $1:2$
3. C.
   $1:4$
4. D.
   $1:1$

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1. A.
   $310\text{ }m/s$
2. B.
   $333\text{ }m/s$
3. C.
   $341\text{ }m/s$
4. D.
   $325\text{ }m/s$

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1. A.
   $\sqrt{\frac{7}{5}}:\sqrt{\frac{5}{3}}:\sqrt{\frac{4}{3}}$
2. B.
   $\sqrt{\frac{5}{3}}:\sqrt{\frac{4}{3}}:\sqrt{\frac{7}{5}}$
3. C.
   $\sqrt{\frac{5}{3}}:\sqrt{\frac{4}{3}}:\sqrt{\frac{4}{3}}$
4. D.
   $\sqrt{\frac{4}{3}}:\sqrt{\frac{5}{3}}:\sqrt{\frac{7}{5}}$

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