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One piece of copper jewelry at 108 degrees Celsius has exactly twice the mass of another piece, which is at 44 degrees Celsius. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the calorimeter (c of copper=0.387 J/g*K)
You need 70.2J to raise the temperature of 34.0 g of ammonia, NH3 (g), from 23.0C to 24.0C. Calculate the specific heat of ammonia.
If you combine equal volumes of the following solutions, which combinations will result in the desired buffer? Why are the answers are 0.20 M CH3CO2H + 0.10 M NaOH and 0.20 M Na(CH3CO2) + 0.10 M HCl
Diamonds are measured in carats where 1 carat= 0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
How many moles of PCl_5 can be produced from 21.0 g of P_4 and excess Cl_2?
What is the ionization state of aniline (protonated, deprotonated, or a mix) at pH 1, 4.6, and 14?
The recommended daily dietary intake of calcium for adult men and pre-menopausal women is 1100 mg/day Calcium citrate , Ca3(C6H5O7)2. What mass of calcium citrate would be needed to provide the recommended daily intake of calcium
How many moles of Na2SO3 were added to the calorimeter cup if 40.0mL 0.50 M NaOCl and 60.0mL 0.50 M Na2SO3 were combined?
What is the percent yield of a reaction in which 212 g phosphorus trichloride reacts with excess water to form 109 g HCl and aqueous phosphorus acid (H3PO3)?
If the partial pressure of oxygen drops below 100 , passengers become drowsy. If this happens, oxygen masks are released. What is the total cabin pressure at which oxygen masks are dropped?
where the atmospheric pressure is 1.00 atm. The balloon rises to an altitude of 20,000 m, where the atmospheric pressure is 61 mmHg and the temperature is 210 K. What is the volume of the balloon at 20,000 m?
A perfect cube of aluminum metal weighs 20.00g. The density of of aluminum is 2.70 g/ml. What are the dimensions of the cube?
what is the value of equilibrium constant Kp if the total pressure is 11 atm?
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