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A student determined the calorimeter constant of the calorimeter. The student added 50.00 ml of cold water to 50.00 ml of heated distilled water in a Styrofoam cup the initial temperature pf the cold water was 21.00 degrees Celsius and of the hot water 29.15 degrees Celsius the maximum temp of the mixture was found to be 24.891 degrees C the maximum temp of the mixture was found to be 24.81 Celsius assume the density of water is 1.00 g ml-1 and the specific heat is 4.184 J g-1 K-1. 1) Determine the ?T for the hot water and the cold water; calculate the heat lost by the hot water; calculate the heat gained by the cold water; Calculate the calorimeter constant, using the ?T of the cold water.
A particular compound contains, by mass, 41.4 % carbon, 3.47 % hydrogen, and 55.1 % oxygen. A 0.050-mol sample of this compound weighs 5.80 g. What is the molecular formula of this compound
Write the chemical equation(s), including state symbols, for what happens when each soluble ionic compound that you identified above is placed in water. Are these substances reacting with water when they are added to water?
a solid,is thought to be either zinc or lead(2)nitrate.how are we going to determine the identity of the solid?
Heat energy is added to a 352 g block of nickel, and the temperature increases from 21 degrees C to 53 degrees C. If the same amount of heat was added to the same mass of water at the same temperature, what would the water's final temperature be
The most two most abundant elements in the crust are oxygen (4.55 X 10^5 g/t, where t stands for metric ton; 1 t=1000kg) and silicon (2.72 X 10^5 g/t), and the two rarest non radioactive elements are ruthenium and rhodium, each with an abundance o..
Calculate the volume of oxygen,measured at STP, produced by the decompistion of 2.87 g of potassium chlorate.
Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 550 mL of solution.
A beaker with 100 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.60 mL of a 0.380 HCl solution to the beaker. How much will the pH c..
In which of the following species is the octet rule violated by the central atom when the central atom has a formal charge of zero?
What is the stereochemical relationship of the products formed by reacting racemic lactic acid with (S)-1-phenylethylamine?
A 2.00 gram sample of unknown gas is placed into a 296 mL flask at 17°C and found to have a pressure of 717 torr. What is the pressure (in kPa) if the sample is moved into a 200 mL flask at 352K
Draw the skeletal structure for trans-1-ethyl-4-iodocyclohexane. Make sure the tapered end, i.e. the thin end, of the wedge bond is attached to the parent.
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