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!
(i) What is the name of the main compound in rust? (ii) Why does the nail in tube 1 not rust?
(iii) What is the purpose of the layer of oil in tube 2?
(b) Zinc can be used to coat iron nails to prevent them from rusting.
(i) What is the name of this process?
(ii) If the layer of zinc on the nail is scratched, sacrificial protection prevents the iron from rusting.
Explain, with the help of two ionic half-equations, how this type of sacrificial protection works.
Use symbols from the box in your equations. You may use each symbol once, more than once or not at all.Fe Zn Fe2+ Zn2+ e– + – ??
consider the reaction of 5.0g of propane with 10.0ml ofmolecular bromine to form 2,2 dibromopropane and hydrogenbromide. a. look up the molecular weight of propane (44.1) and calculate the moles of propane present before the reaction
One way to approach the problem is to imagine the reaction proceeds to equilibrium by first going 100% to completion and then backing up a little
Write a balanced equation with appropriate net ions for when solutions of potassium chromate and barium nitrate are added together.
The solubility product constant for AgCl at 298 K is 1.82 × 10-10. Calculate E° for the process AgCl+e----->Ag+Cl given that the standard reduction potential of the half-reaction Ag++e----->Ag is +.799V
A weaken solution in water has an osmotic pressure of 12.2 atm at 20oC relative to pure water. Approximate the mole fraction of water in the solution also the difference in chemical potential between pure water and the solution.
Explain which of the following represents the change in electronic configuration that is associated with the first ionization energy of magnesium?
Question- 1. Calculate the pH of the resulting solution if 34.0 ml of 0.340 HCl (aq) is added to 24.0 ml of 0.440 M NaOH (aq) 2. Calculate the pH at the equivalence point for the titration of 0.250 M CH3NH2
Na3AlF6(l) 3 Na(l) + Al(l) + 3 F2(g) Define what is the concentration of F2 over a bath of molten cryolite at this temperature. 8 1017 M 3 10-35 M 6 10-74 M 8 10-312 M 5 10102 M
describe the reactant and products of the chemical reaction. Qas the reactant (potato chip) completely consumed? What evidence supports your answer?
Use standard heat of formation data to calculate the heat released per gram of B2H6 when burned with O2(g) to afford boric acid (H2BO3(s)).
Excluding water, what is the number of moles of each component present after reaction. What is the chemical equation for the equilibrium that you are using to determine the pH
a solution contains chromiumcr3 ion and magnesium mg2 ion. the addition of one litre of 1.55m sodium fluoride solution
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