Estimating the final temperature of horseshoe
A blacksmith heats a 1.9 iron horseshoe to 460, then plunges it into a bucket containing 20 of water at 19. What is the final temperature?
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An aqueous solution contains 10% ammonium by mass and has a density 0.99 gcm-3 . Calculate hydroxyl and hydrogen ion concentration in this solution. if Ka for ammonium ion = 5.0 x 10^-10.
If the simulation does not give a precise quantitative reflection of Graham's Law, what could be done to improve the quantitative estimate of the simulation?
List the major similarities and differences between the League of Nations and the United Nations. Which of those differences do you believe represent significant improvement? Why or why not? If so, what sort, and in which areas should impro
On a very muddy football field, a 120 kg linebacker tackles an 75 kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.6 m/s north and the halfback is sliding with a velocity of 7.4 m/s east. What is the m
61.0 mL of a 1.40 M solution is diluted to a total volume of 268 mL. A 134-mL portion of that solution is diluted by adding 187 mL of water. What is the final concentration? Assume the volumes are additive.
Based on the North Atlantic Treaty and the United Nations Charter, what is the legal or formal relation between NATO and the UN? In practice, how are the two international organizations related in the performance of their tasks?
When a 6.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 6.019 kJ·K-1, the temperature decreases by 0.230 K. Calculate the molar heat of solution of KCl.
In a diesel engine, the piston compresses air at 306 K to a volume that is 0.0622 of the original volume and a pressure that is 48.2 times the original pressure. What is the temperature of the air after the compression?
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