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Two liters of oxygen at 25 degree Celsius and a pressure of 2.3 atm is added to a 3.0 L flask containing nitrogen with a pressure of 3.5 atm at 25 degree Celsius. What is the pressure of the gas mixture.
Are the initial and the final volume the same?
What is the concentration of a potassium ion in 2.0 M of potassium sulfide?
Calculate the weight of helium in pounds to fill a ballon whose capacity is 1.0 X10^6 ft^3 at 1 atm pressure and 27 C.
Please complete the calculations needed to prepare the buffer Prior to coming to the lab. What are the calculations needed for this.
Fish are processed into Fish meal and used as a supplemen- tary protein food. In the processing the oil is First extracted to produce wet Fish cake containing 80 wt % water and 20 wt % bone-dry cake
Calculate the standard entropy, ΔS°rxn, of the following reaction at 25.0°C using the data in this table. The standard enthalpy of the reaction, ΔH°rxn, is -633.1 kJ·mol-1.
What does available chlorine mean and why do manufacturers identify it on product labels?
One of the strongest "weak" acids is chloric acid. Its Ka is 1.0. What is the pH of a 0.75M solution of HClO3
butyric acid is responsible for the foul smell of rancid butter. the pka of butyric acicd is 4.84.a calculate the pkb
A gas mixture is made by combining 8.1 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 19.20 L. What is the molar mass of the unknown gas?
A 27.21 g sample of a substance is initially at 25.4 °C. After absorbing 2591 J of heat, the temperature of the substance is 199.8 °C. What is the specific heat (c) of the substance?
The element lanthanum has two stable isotopes, lanthanum-138 with an atomic mass of 137.9 amu and lanthanum-139 with an atomic mass of 138.9 amu
Compute the molarity of NaOH from a titration that contained 0.5156 g of KHP and 29.35mL of 0.1 M solution of NaOH used.
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