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What is a real life application of determining the molecular mass of a volatile liquid? Write the complex number in the form a + bi. five divided by two(cos 150° + i sin 150°)? Find an equation in standard form for the hyperbola with vertices at (0, ±2) and foci at (0, ±7).? 1.2 meter? What is resultant wave? How to calculate it? what is beat frequency? How to calculate???????