What is the mass of the unknown atom

Reference no: EM13328251

A neon atom (m = 20.0 u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom travels away at a 56.0° angle from its original direction and the unknown atom travels away at a 51.6° angle. What is the mass of the unknown atom? [Hint: You could use the law of sines.]

Reference no: EM13328251

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