Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1) A piece of dry ice (CO2) has a mass of 23.50 g. It is dropped into an evacuated 2.00-L flask. What is the pressure in the flask at -7°C?
2)A sample of oxygen of mass 22.0 g is confined in a vessel at 2°C and 2000. torr. Then 2.50 g of hydrogen is pumped into the vessel at constant temperature. What will be the final pressure in the vessel (assuming only mixing with no reaction)?
3)A nitrogen sample occupies 236 mL at STP. If the same sample were collected over water at 25°C and 700. torr, what would be the volume of the gas sample? (Assume that vapor pressure of water at 25°C is 23.8 torr.)
4)Heating a 5.374-g sample of an ore containing a metal sulfide, in the presence of excess oxygen, produces 1.327 L of dry SO2, measured at 18.0°C and 791 torr. Calculate the percentage by mass of sulfur in the ore.
Some NOCl(g), intially at 1.000 atm, is placed in an empty reaction vessel. At equilibrium, the total pressure is 1.135 atm. Assuming the partial pressures are in atmospheres, what is Kp for the reaction below?
What NaCl concentration results when 289 mL of a 0.880 M NaCl solution is mixed with 647 mL of a 0.210 M NaCl solution?
Consider the following standard heats of formation: Standard Heat of formations for the substances:CO2(g) = -393.5 kJ/mol PbO(s) = -151.6 kJ/mol CO(g)
Ignore the volume of water, and determine the final volume of the reaction mixture at 1.00 atm and 298 K if the reaction goes to completion.
Consider the following element combinations. Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table
Gibbs Free Energy: Spontaneity Elemental carbon usually exists in one of two forms: graphite or diamond. It is generally believed that diamonds last forever.
a)Calculate the theoretical yield of when 109g of C2H6 reacts with 228g Cl2 of , assuming that and react only to form C2H5Cl and HCl .
Write the Equation for the dissolution of Sr2NO3 in water. How many moles of strontium ions and nitrate ions are produced by dissolving 0.5 mol of strontium nitrate?
Write the balanced reaction for the complete combustion f octane (C8H18) and then determine how many moles of oxygen it would require to burn 240.00 moles of octane? 2 350.00 grams of octane?
Explain an oxygen molecule has a mass of 5.3 x 10-26 kg. If the molecule is moving at 400m/s 1000 mpg with an uncertainty in velocity of 1 m/s, the uncertainty in position h=6.626 x 10-34 Js
Problem- Which of the following is/are correct postulates of Bohr's theory of the hydrogen atom? Provide written rationale. 1) The energy of an electron in an atom is quantized i.e. only specific energy values are possible.
For CO2 one of the major absorptions of IR radiation occurs at the wavenumber of 2350cm^-1. what is the energy corresponding to that IR photon
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd