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Suppose that 3.00 grams of Al are mixed with excess acid. If the hydrogen gas produced is directly collected into a 850. mL glass flask at 24.0 °C, what is the pressure inside the flask (in atm)?
-This hydrogen gas is then completely transferred from the flask to a balloon. To what volume (in L) will the balloon inflate under STP conditions?
-Suppose the balloon is released and rises up to an altitude where the temperature is 11.2 °C and the pressure is 438 mmHg. What is the new volume of the balloon (in L)?
-Graph your data from Part-A. Using the volume as the y-axis and the temperature in oC as the x-axis. What is the x-axis interception? What it standing for? What is the expected value of it?
N2O4+ 2 N2H4= 3 N2 + 4 H2O, Determine the limiting reactant and the mass in grams of nitrogen that can be formed from 50.0g N2O4 and 45.0g N2H4. The molar masses are as follows: N2O4=92.02g/mol, N2H4=32.05g/mol.
Use the Ksp values to calculate the molar solubility of each of the following compounds in pure water. MX (Ksp = 1.30×10-38)
Use Lewis structures and bond energies to calculate the enthalpy change of the following reaction: HCN(g) + 2H2(g) => CH3NH2(g) a. 158 kJ b. -158 kJ c. -590 kJ d. 590 kJ e. none of these
A 427 mL sample of 0.2553 M HBr is mixed with 539 mL sample of NaOH (which has a pH of 13.87). What is the pH of the resulting solution
Problem- Other than radioactivity, how do the chemical and physical properties of radioactive isotopes of an element compare to those of the stable ones
What is the nature of the forces of attraction in it. Explain in terms of their structures why each of the following pairs of substances have very different chemical and physical properties
What are some of the benefits of using a binary eutectic alloy in a physical application (e.g. electronics, plumbing, etc.) rather than using one of the pure metals that constitute the alloy independently? Provide two examples
A solution of Na3AsO4 is added dropwise to a solution that is 0.0643 M in Bi3+ and 0.000180 M in Cd2+. What concentration of AsO43- is necessary to begin precipitation
Fructose contains only C,H, and O. 17.1g of carbon dioxide gas and 7.26 g of water vapor were produced when 12.1 g of solid fructose were combusted with excess of oxygen gas.
What is the osmotic pressure of a solution that contains 4.26 ×10-3 moles of lactose in 111 mL of solution at 29C?
Compute the volume of the tank if the total pressure of the mixture is 44.08 psi at 86°F. What is the partial pressure of each constituent and the average molecular weight of the mixture
Question- A 1.00L buffer solution is 0.250M HF and 0.250M LiF. Calculate the pH of this solution after addition of 0.150 moles of solid LiOH. Ka HF=3.5x10^-4.
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