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Inorganic Chemistry
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 5.30 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use Cm = 30.8 J/(K·mol) for Na(l) at 500 K.
Inorganic Chemistry
If the heat of combustion for a specific compound is -1290.0 kJ/mol and its molar mass is 35.43 g/mol, how many grams of this compound must you burn to release 322.70 kJ of heat?
Inorganic Chemistry
If you have 310.0 mL of water at 25.00 °C and add 130.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.
Inorganic Chemistry
A researcher studying the nutritional value of a new candy places a 5.10-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.70 °C. If the heat capacity of the calorimeter is 45.00 kJ·K–1, how many nutritional Calories are there per gram of the candy?
Inorganic Chemistry
An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 6965 J. What is the specific heat of the gas?
Inorganic Chemistry
how much hydrogen in grams could be obtained from 4.5L of water?
Inorganic Chemistry
What would be the speed of the following particles if they had the same wavelength as a photon of red light (λ = 750.0 nm)? If MASS or proton is 1.673x 10^-24?
nuetron is 1.675x 10^-24?
election is 9.109 x 10^-28?
alpha part 6.645x 10^-24 (grams)
nuetron is 1.675x 10^-24?
election is 9.109 x 10^-28?
alpha part 6.645x 10^-24 (grams)
Inorganic Chemistry
the following reaction takes place
3 CuO(s) +2NH3(g)--->3 Cu(s) +N2(g)+ 3 H20(g)
50.0g of CuO(s) was placed in an 80.0 L vessel, and the vessel was evacuated. Ammonia gas was the gradually introduced into the vessel, slow enough for the reaction to proceed, until the total pressure in the vessel (after reaction) was 1.00atm. what are the partial pressures of all 3 gases in the vessel? (Temperature is 180degrees celcius) Please show how you arrived at the answers.
3 CuO(s) +2NH3(g)--->3 Cu(s) +N2(g)+ 3 H20(g)
50.0g of CuO(s) was placed in an 80.0 L vessel, and the vessel was evacuated. Ammonia gas was the gradually introduced into the vessel, slow enough for the reaction to proceed, until the total pressure in the vessel (after reaction) was 1.00atm. what are the partial pressures of all 3 gases in the vessel? (Temperature is 180degrees celcius) Please show how you arrived at the answers.
Inorganic Chemistry
where can you find the strongest hydrogen bond
Inorganic Chemistry
why do we use sodium salts and not potassium salts in experiments
