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(a) How much energy is necessary to heat 1.0 kg of water from room temperature (20°C) to its boiling point? (Assume no energy loss.)
(b) If electrical energy were used, how much would this cost at 12¢ per kWh?
The concentration of carbonate ion (CO32-) is 1.2 x 10-7 M. The precipitation of CaCO3 is favored under conditions in the ocean. If all of the CaCO3 precipitated what would be the concentration of the excess reactant
What is the percent dissociation of ascorbic acid if the solution has a pH = 5.50 and a pKa = 4.10?
Aqueous silver nitrate was then added to precipitate the Cl- and Br- ions as AgCl and AgBr. The mass of silver halides obtained was 0.9974 g. What are the molarities of HCl and HBr in the original solution
A technologist treats the sample with 100 mL of 0.1550M Na2C2O4. Calculate [Ca^2+] after the treatment. (CaC2O4*H2O Ksp = 2.30*10^-9)
an antacid tablet requires 25.82 ml of 0.200 m hcl to titrate to its endpoint. what volume in milliliters of stomach
calculate the percent yield for the reaction p4 s 6 cl2 g rarr 4 pcl3 l if 75.0 g of phosphorus reacts with excess
Question- Write the chemical equation that defines the normal boiling point of liquid phosphorous trichloride. What is the delta G degrees for the phase change at equilibrium? Estimate the normal boiling point of PCl3.
Problem- 10 ml of 6M HCl is used during this lab. How much Na2CO3 would be required to neutralize this much acid
The density of pure silver is 10.5 g/cm3 at 20°C. If 5.25 g of pure silver pellets is added to a graduated cylinder containing 16.1 mL of water, to what volume level will the water in the cylinder rise
just find the limiting reactant and the excess reactant? give reasons for your choices.a. wood burning in a campfireb.
A 70 piece of ice at 0 is added to a sample of water at 6. All of the ice melts and the temperature of the water decreases to 0. How many grams of water were in the sample?
Predict whether the benzoin condensation would work with 4-tolualdehyde, 4- trifluoromethylbenzaldehyde, and 4-N ethylaminobenzaldehyde. Draw the structure of any products that are formed.
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