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A 11.5-g bullet is fired into a block of wood at 249 m/s. The block is attached to a spring that has a spring constant of 205 N/m. The block and bullet continue to move, compressing the spring by 35.0 cm before the whole system momentarily comes to a stop. Assuming that the surface on which the block is resting is frictionless, determine the mass of the wooden block in kg.
At 25 degrees Celsius liquid A has a vapor pressure of 100 torr while liquid B has a vapor pressure of 200 torr. The heat of vaporization of liquid A is 32 kJ/mol
What are the pKa's of the 2 acidic protons of salicylic acid. Suggest a synthesis of methyl salicylate using phenol as a starting material.
Draw a Lewis structure for acyl chloride R-C(=O)-Cl and state its 3D-structure around the central atom (C). R is an acyl substituent.
A 75.0 g sample of a pure liquid, liquid A with a density of 3.00 g/mL is mixed with a 50.0mL sample of a pure liquid, liquid B with a density of 2.00 g/mL. Explain what is the total volume of the mixture. Presume there is no reaction upon the mi..
Other than precision and accuracy, Define what are two advantages of using a burette for measuring reaction volumes as opposed to a graduated cylinder
How much energy is required to heat 81.0 g of water (specific heat = 1.00 cal/g°C) at 11.0°C to steam (specific heat 0.468 cal/g°C) at 123.0°C?
can you write the oxidation reduction reaction for a solution of potassium dichromate added to an acidified solution
Determine theoretical yield, limiting agent and excess reagent - How much excess reagent remains after the reaction goes to completion
If a drop of water clings to the outside of the foil cap and is not removed, how would the experimentally determined molecular weight be affected? Too high or too low?
600 mL of water is heated from 20c to 85 c to make a cup of tea. How much heat flows into the water? NOTE: density and specific heat capacity of water 1.00g/mL and 4.18J/(g.c) respectively.
A student added 0.40 mL of acetic anhydride instead of 4.0 mL. Did this procedural error affect the theoretical yield of her preparation? Briefly explain.
Carbon dioxide is removed from the atmosphere of space capsules by reaction with a solid metal hydroxide. Theproducts are water and the metal carbonate
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