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 1.0-L buffer solution is 0.105M in HNO 2 and 0.145M in NaNO 2. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1.4g NaOH .Express your answers using three significant figures separated by a comma.
2- A 1.0-L buffer solution is 0.105M in HNO 2 and 0.145M in NaNO 2. Determine the concentrations of HNO 2 and NaNO 2 after addition of 1.4g HI. Express your answers using three significant figures separated by a comma.
3- Which processes are nonspontaneous?a bike going up a hilla meteor falling to Earthobtaining hydrogen gas from liquid watera ball rolling down a hill
4-predict the sign of ΔS sys for each chemical reaction. ΔS sys >0 or ΔS sys <02KMnO 4 (s)→K 2 MnO 4 (s)+MnO 2 (s)+O 2 (g)CH 2 =CH 2 (g)+H 2 (g)→CH 3 CH 3 (g)Na(s)+1/2Cl 2 (g)→NaCl(s)N 2 (g)+3H 2 (g)→2NH 3 (g)
5-Why does a gas have greater entropy than the corresponding solid? Choose from:
The entropy change of sublimation (solid going directly to gas) is positive.There are more available types of kinetic energy in a gas. In a solid, the molecules can only vibrate.A gas expands to fill its container, while a solid maintains a constant shape.Particles in a solid move slower than in a gas.
Calculate the molecular weight of this gas if A sample of gas weighs 0.250 g and occupies a volume of 112 cm3 at STP?
Compute the ΔH for this reaction and express your answer in kilojoules if the given . Bond Energies (kJ/mol) are N-Cl 201 , Cl-Cl 243 , N-H 389 ,H-Cl 431
Determine what is element Y if you have a compound consists of element "Y" and H, only and know that it is 79.89% element Y by mass. Each molecule has 3.00 times as many H atoms as Y atoms?
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
What is methanol's vapor pressure It boils at 65.0 °C and has a heat of vaporization ΔHvap = 37.4 kJ/mol. at 22.0 °C?
Determine the concentration of a solution prepared by diluting 25.0 milliliters of a 12 molar HCl solution with H2O until the final volume is 2.50 x 10² milliliters.
Explain the type of nonrenewable energy resource used and their short-term and long-term effects on the environment
Write the nuclear equation for the alpha decay ( production of radioactive decay that may be considered radioactive waste products by the useful production of nuclear energy ) of each nuclide that are products of a nuclear power plant Rn-222, T..
A procedural change would be essential if a boy want to determine the tomato juice's acidity by titrating a sample of juice with NaOH(sodium hydroxide) solution Briefly explain What change would you make to the procedure ?
How many grams of Oxygen gas are required if It is desired to inflate a baggie with 842 milliliters volume by filling it with O2 gas at 1.21 atm pressure and a 306 K.temperature ?
Evaluate the electronic configuration for ionization energies of Magnesium, the orbital number in which the electrons are added in phosphorus ion, and the one will lose in the ionization of Alluminium.
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
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