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A student is given the challenge of determining the focal length of the lens in an LCD projector. The projector creates an image 600 cm tall 12 m from the lens. The object is 12 cm tall. What is the distance from the lens to the object? What is the focal length of the lens?
Question- A 0.140-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant *of Ni(NH3)62 is 5.5 × 108.
We wish to lower the freezing point of the water in an automobile radiator to -40 C. The total mass of water present is 12.0kg. For which one for the following compounds would we have to use the greatest mass of solute to achieve this
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
What is the relationship between the rate law of the forward reaction, the rate law of the reverse reaction, and the equilibrium expression?
The specific heat capacity of mercury at 25°C is 1.400×10^-1 J/g/K. For a 8.25×10^2 g sample of mercury, how much energy is required to raise the temperature from 22.4°C to 29.4°C? (Assume that the heat capacity is constant over this temperature r..
Make Hot Ice from Vinegar and Baking Soda or any method to easy to do and get result
A certain first-order reaction has a half-life of 1.2 × 103 s. (a) Calculate the rate constant for this reaction.
Define when this solution was separated from pure water by a semi permeable membrane, the resulting osmotic pressure supported a column of water 157mm in height. Explain what is the molecular mass of chymotrypsinogen
A 74.8 g sample of copper at 143.2°C is added to an insulated vessel containing 165 mL of glycerol, C3H8O3 (l) (d = 1.26 g/mL), at 24.8°C. The final temperature is 31.1°C. The specific heat of copper is 0.385 J g-1°C-1. What is the heat capacity o..
Find the concentration of Pb2 in 0.0010 M KI saturated with PbI2. Include activity coefficients in your solubility-product expression. The Ksp of PbI2 is 9.8× 10-9. Hint from sapling below: Including activity coefficients, the solubility-product e..
determine the mass of aluminum acetate that can be made if 125 grams of acetic acid and 275 grams of aluminum hydroxide
what are the freezing point and boiling point of an aquenous solution of 15.5g glucose c6h12o6 dissolved in 150 g of
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