One mole of ammonia (NH3) has a mass of 17.0 g, and one mole is equal to 6.02 × 10^23 molecules. How many hydrogen (H) atoms are in 55.0 g of ammonia? Note that each molecule of ammonia has 3 hydrogen atoms
a. 5.84E+24
b. 1.95E+24
c. 3.07E+25
d. 6.49E+23
a
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Monochromatic light hits a piece of glass. Assuming the frequency remains constant, what happens to the wavelength in the glass as the index of refraction decreases?
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Two blocks of masses m1 and m2 are released from the top of two frictionless inclined planes of the same height making 30° and 60° angles with the horizontal direction, respectively
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