A chemical reaction is at equilibrium when
a. no reactants are changing to products.
b. the forward and reverse reactions proceed at the same rate.
c. the total mass has become constant.
d. the temperature is no longer changing.
b
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Nuclear Binding Energy: How much energy is released when 0.60 ?g of 3H have decayed to 3He? The mass of 3He is 3.0160293 u, the mass of 3H is 3.0160492 u, 1 u = 931.5 MeV/c2, 1 eV = 1.60 × 10-19 J, and NA = 6.022 × 1023 molecules/mol.
Fill in the blank(s) with the appropriate word(s).
An aquarium contains a 5-cm layer of water (n = 1.333) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the carbon tetrachloride is 20°, what is the angle of refraction into the air?
a. 20° b. 30° c. 38° d. 69° e. 26°
Newton's rings illustrate
A) refraction. B) reflection. C) dispersion. D) polarization. E) interference.
A flat horizontal plate of area 400 cm2 is dragged over a 0.20 cm thick layer of oil at a speed of 30.0 cm/s. The oil is resting on a fixed horizontal surface. It takes a force 1.20 N applied to the plate to sustain this speed
What is the viscosity of the oil? A) 6.00 kg/m • s B) 20.0 kg/m • s C) 60.0 kg/m • s D) 0.200 kg/m • s E) 200 kg/m • s