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A piece of a newly synthesized material of mass 25.0 g at 80.0C is placed in a calorimeter containing 100.0 g of water at 20.0C. If the final temperature of the system is 24.0C, what is the specific heat capacity of this material?
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl . ClxOy in presence of H2 (g) → HCl + H2O all the oxygen
In an experiment 1.65g of lead(ii) nitrate react with .327g of zinc. What is the mole relationship between the lead nitrate and the zinc.
A certain first-order reaction (products) has a rate constant of 6.90×10-3 s^{-1} at 45 C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration?
at 75 degrees celsius, a gas has a volume of 3.22 dm^2. What volume will it occupy at 75 k?
you add 1.65L of water to 112g of sodium acetate. what is the molarity of the sodium acetate in the solution
Determine the maximum number of electrons that could be emitted from metal by a burst of light with a total energy (E)of 9.86× 10^(-7) Joules?
what is the maximum amount of P4S10(444.545 g/mol) which could be formed from 17.12 g of P4 (123.895 g/mol) and 0.137 mol of S8 (256.52 g/mol).
Nicotine, a component of tobacco, is composed of C, H, and N. A 12.075 mg sample of nicotine was combusted, producing 32.757 mg of CO2 and 9.391 mg of H2O. What is the empirical formula for nicotine?
calculate the mass in grams of NaCl Present in each of the following solution A. 11.5 g Of 6.25 % NaCl Solution B. 6.25 g of 11.5 % NaCl solution
How much energy would be required to melt 74 g of HCl at its melting point of -110.8 ? C? ?Hfus for HCl is 14.2 cal/g and ?Hvap for HCl is 98.7 cal/g. Answer in units of cal.
A current of 3.15 A is passed through a Pb(NO3)2 solution for 1.40 hours. How much lead is plated out of the solution.
the density of benzene at 15 degrees C is 0.8787g/ml.calculate the mass of 0.1550L of benzene at this temp.
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