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Q1 When water is heated, the temperature eventually reaches a constant value and forms a plateau on the graph. What does the plateau indicate?
Q2 175 g of water was heated from 15°C to 88°C. How many kilojoules were absorbed by the water?
Q3 How many kilojoules are required at 0°C to melt an ice cube with a mass of 25 g?
Q4 How many kilojoules are required to melt 15 g of ice at 0°C, and raise the temperature of the liquid that forms to 85°C?
A solid block of exactky 100.0 cm 3 has a mass of 153.6g. Determine its density. Will the block sink or float on water?
a he ion emitts a photon with a frequency of 2.76times 1015 hz. if the energy of the initial state ofthe he ion was
Solution A is 3.15 M CaCl2. 110mL of solution A are diluted to 500. mL of solution B. 45.0 mL of solution B are diluted to 335. mL of solution C. What is the concentration in moles per liter of solution C?
Why are the products attached to C3 of 1,4 pentadiene more acidic than the methyl hydrogen atoms of propene? Maybe you can help me with this one. Are the C3 atoms more acidic because there is more s character involved with the atoms and as the s ch..
An Indy race car can travel 111 m/s. What is the speed of the car in miles per hour? (Given: 1 mi = 1.61 km, and 1 h = 3600 s)
A 21.8 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature rises from 25.0°C to 62.3°C, determine the heat capacity of the calorimeter. The molar mass of ethanol is 46.07 g/mol.
a solution is made by dissolving 15.5 grams of glucose c6h12o6 in 245 grams of water. what is the freezing-point
A solution 14.3 % (by mass) HCl. The density of the solution is 1.08 g/mL. What is the molarity of the solution
how many grams of sodium lactate must be added to a 1.00l solution of .400m lactic acid to make a buffer with a ph of
when 0.500 l of a 1.00 m solution of Pb( NO3) 2 is mixed with 0.500 l of a 1.00 m solution of Kl how many grams of lead(II) iodide are formed
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
you take a 25.00 g ice cube temperature -20 ec and place it in 225.00 g of water at 22 ec. what will the temperature of
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