The equation for density, d is
d = m/V
where m is mass and V is volume.
What is the density, d, of a substance with a volume of V = 16.4 cm3 and a mass of m = 45.2 g?
Express your answer numerically in grams per cubic centimeter.
The equation for molarity, M, is
M = n/V
where V is volume and n is the number of moles of solute.
A certain solution has a molarity of M = 5.19 mol/L and has a volume of V = 0.590 L. What is the value of n?
Express your answer numerically in moles.
The equation for photon energy, E, is
E = hc/λ
where h = 6.626 x 10-34 J•s (Planck's constant) and c = 299 x 108 m/s (the speed of light).
What is the wavelength, λ, of a photon that has an energy of E = 4.77 x 10-19 J?
Express your answer numerically in meters.
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