What is the smallest resolvable angle in arc seconds
If a 2 m telescope is observing a wavelength of 600 nm, what is the smallest resolvable angle in arc seconds?
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A 30 gram block of an unknown metal at 86.0oC was dropped into an insulated flask containing approximately 40.0 grams of ice and 30.0 grams of water at 0oC.
A reaction occurs in a calorimeter that contains 120.0 g of water at 25.0°C, and 514.95 cal of heat is evolved. If the specific heat capacity of water is 1 cal/deg-g, what is the final temperature of the water?
The GPR (Ground Penetrating Radar) produced an electromagnetic radiation that had a frequency of 2.00 X 102 MHz. Determine the amount of energy (Kj) in this radiation.
The value of Kf for cyclohexane is 20.0°C/m, and its normal freezing point is 6.6°C. A mass of 1.604 g of a waxy solid dissolved in 10.000 g of cyclohexane results in a freezing point of 4.4°C. Calculate the molar mass of the solid.
The particles of each substance are larger than 0.5 cm in diameter. All you know about the substances is that each is a pure metal. Describe a method for determining the identities of the metals that make up the mixture. Assume that each metal is
when aluminum is heated in oxygen, aluminum oxide is formed. What weight of the oxide can be obtained from 25.0g of the metal.
A 4.80 g nugget of pure gold absorbed 276 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C?
The total pressure in the system at equilibrium is 3.0 atm. A separate measurement shows that the mole fraction of O2 at equilibrium is 0.12. (a) Write the Kp expression for this reaction.
Calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to 3.9°C when 4.27 g of the substance is dissolved in the water.
Assuming ideal gas behavior, 1.00atm, and 37 celcius calculate the volume of CO2 produced by this power plant.
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