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1. Which is more tightly packed, a solid with one atom per unit cell, a solid where each atom has 8 nearest neighbors, or a solid where each atom has 6 nearest neighbors?
2. What effect does outside pressure have on the boiling point of water?
If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? (c of water is 4.184 J/g×K)
what radial position is the velocity of an individual fluid element equal to the average velocity of the fluid? (r= r subscript c and 0
Use the values of Ka1 = 0.056 and Ka2 = 5.4 x 10-5 to calculate the [OH-] in a 0.456 M solution of oxalic acid (H2C2O4). Use E notation and 3 significant figures.
What is the de Broglie wavelength in cm, of a 12.9 g hummingbird flying at 1.14 102 mph? (1 mile = 1.61 km.)
if 60.2 grams of hg combines completely with 24.0 grams br to form a compound what is the percent composition of hg in
Assuming a tank temperature of 16oC, what mass of oxygen is contained in the two tanks?
An unknown radioactive substance has a half-life of 3.20hours . If 42.6g of the substance is currently present, what mass A0 was present 8.00 hours ago
A mixture of 0.074 mole H2 and 0.151 mol CH4 is at equilibrium with solid carbon in a 1 liter container. If the equation for the equilibrium is CH4(g) ?C(s) + 2H2(g). (a) Explain what is the value for Kc
Define the normal boiling point of a liquid. Explain why atmospheric pressure affects boiling points of liquids.
A weak base B has a dissociation constant Kb = 1.0 X 10-7. For a 0.30 M solution of B in water,
A certain reaction has activation energy of 67.57 kJ/mol. At what Kelvin temperature will the reaction proceed 3.50 times faster than it did at 345 K
What is the time required to reduce the concentration of lactose in 2 L of milk from an initial value of 2.50 mg/mL to a final value of 1.5 mg/mL.
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