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How much heat is required to warm 221 g of ice from -44.7°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
how many mols of H 2 can produce
The half-life of carbon-14 is 5,730 years. If you started with 100.0 g of carbon-14, how much carbon-14 would remain after 4 half-lives.
Find the heat of combustion in kJ/g for each gas. These values are valid at 25°C, where the water produced by the reaction is in the liquid state.
When M2S3(s) is heated in air, it is converted to MO2(s). A 3.700-g sample of M2S3(s) shows a decrease in mass of 0.207 g when it is heated in air.
Calculate how many calories of heat are needed to increases the temperature of 550 grams H2O from 12 degree celsius to 18 degree celsius?
how many grams of Mg(OH)2 will be needed to neutralize 25ml of stomach acid if stomach acid is .10M HCL
What is the fundamental difference between a voltaic cell and an electrolytic cell. Can a voltaic cell in which both half-reactions are the same generate a current.
A 60.0 g sample of an alloy was heated to 96.0 °C and then dropped into a beaker containing 87.0 g of water at 24.1 °C. The temperature of the water rose to a final 27.63 °C.
What volume of a concentrated { HCl} solution, which is 36.0% { HCl} by mass and has a density of 1.179 {g/mL}, should be used to make 5.30L of an {HCl} solution with a {pH} of 1.7.
When sodium carbonate reacts with hydrochloric acid, the carbonic acid that is formed immediately breaks down into carbon dioxide and water. What weight of sodium carbonate would have been present originally
The blue color of the sky is due to the scattering of sunlight by the molecules in the air. The blue light has a frequency of about 7.5 x 10^14 Hz.
For the titration of 50.0 mL of 0.020 M aqueous salicylic acid with 0.020 M KOH(aq), calculate the pH after the addition of 55.0 mL of KOH(aq). For salycylic acid, pKa = 2.97.
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