2010 - SAASTA
... This heat may be employed directly, as in the case of a home furnace, or utilized to produce steam with which to drive a turbo generator so that it can supply electricity. In still other cases, as, for example, gas turbines used in jet aircraft, the heat yielded by burning a fossil fuel can serve to ...
... This heat may be employed directly, as in the case of a home furnace, or utilized to produce steam with which to drive a turbo generator so that it can supply electricity. In still other cases, as, for example, gas turbines used in jet aircraft, the heat yielded by burning a fossil fuel can serve to ...
AH 2015 incl MG
... Some zinc metal is added to a flask containing an acidified solution of the dioxovanadium(V) ion, VO2+(aq). The flask is stoppered with some cotton wool and gently swirled. The colour of the solution turns from yellow to blue. Further swirling turns the solution from blue to green. Finally, the flas ...
... Some zinc metal is added to a flask containing an acidified solution of the dioxovanadium(V) ion, VO2+(aq). The flask is stoppered with some cotton wool and gently swirled. The colour of the solution turns from yellow to blue. Further swirling turns the solution from blue to green. Finally, the flas ...
Calculating molar volume
... done indirectly by first working out the number of moles of iodine required and then using the redox equation to work out the number of moles of vitamin C present. Moles can then be converted to mass. Example: A 250 cm3 solution of vitamin C (C6H8O6) was prepared by dissolving a tablet in de-ionised ...
... done indirectly by first working out the number of moles of iodine required and then using the redox equation to work out the number of moles of vitamin C present. Moles can then be converted to mass. Example: A 250 cm3 solution of vitamin C (C6H8O6) was prepared by dissolving a tablet in de-ionised ...
1984 Advanced Placement Exam
... When the concentration of substance B in the re(A) K4[Fe(CN)6] (D) K2[Pt(CN)6] action above is doubled, all other factors being held constant, it is found that the rate of the reac(B) K3[Fe(CN)6] (E) KCN tion remains unchanged. The most probable ex(C) K2[Pt(CN)4] planation for this observation is th ...
... When the concentration of substance B in the re(A) K4[Fe(CN)6] (D) K2[Pt(CN)6] action above is doubled, all other factors being held constant, it is found that the rate of the reac(B) K3[Fe(CN)6] (E) KCN tion remains unchanged. The most probable ex(C) K2[Pt(CN)4] planation for this observation is th ...
GCSE ADDITIONAL CHEMISTRY (C2) REVISION BOOKLET
... g) The first energy level is nearest to the centre and can take a maximum of two electrons. h) The second and third energy levels can take a maximum of eight electrons each. i) The first level is filled with electrons first and then the second and third ones. j) When atoms bond with other atoms, the ...
... g) The first energy level is nearest to the centre and can take a maximum of two electrons. h) The second and third energy levels can take a maximum of eight electrons each. i) The first level is filled with electrons first and then the second and third ones. j) When atoms bond with other atoms, the ...
Matter and Measurement
... An atom is oxidized (loses electrons) if its oxidation number increases, and is reduced (gains electrons) if its oxidation number decreases An oxidizing agent causes the oxidation of another species by accepting an electron from it; in the process it is ...
... An atom is oxidized (loses electrons) if its oxidation number increases, and is reduced (gains electrons) if its oxidation number decreases An oxidizing agent causes the oxidation of another species by accepting an electron from it; in the process it is ...
chapter 16
... proposed by Gudberg and Waage in 1864 is known as the Law of Mass Action. Equilibrium is temperature dependent, however, it does not change with concentration or pressure. ...
... proposed by Gudberg and Waage in 1864 is known as the Law of Mass Action. Equilibrium is temperature dependent, however, it does not change with concentration or pressure. ...
1st-Year-ch-wise-test
... (6)Paschen, Brackette and Pfund series fall which region (a) ultraviolet region (b) I.R region (c) visible region (d) X-rays region (7) The volume of 1 mole of a gas at STP (a) 22.414 dm3 (b) 22414 dm3 ...
... (6)Paschen, Brackette and Pfund series fall which region (a) ultraviolet region (b) I.R region (c) visible region (d) X-rays region (7) The volume of 1 mole of a gas at STP (a) 22.414 dm3 (b) 22414 dm3 ...
Honors Chemistry Unit 4 Student Packet: Honors Chemistry Problem
... 2. What is the mass of the excess reactant left form the reaction in problem #1? 3. How many grams of calcium hydroxide would be formed if 100. g of calcium were added to 100.mL of water. (Remember the density of water is 1.00g/mL) 4. If 10.0 g of hydrogen and 40.0 g of oxygen are mixed in a steel r ...
... 2. What is the mass of the excess reactant left form the reaction in problem #1? 3. How many grams of calcium hydroxide would be formed if 100. g of calcium were added to 100.mL of water. (Remember the density of water is 1.00g/mL) 4. If 10.0 g of hydrogen and 40.0 g of oxygen are mixed in a steel r ...
homework-11th-chem
... 10–1 mol L–1. If value of Kc is 8.3 × 10–3, what are the concentrations of PCl3 and Cl2 at equilibrium?PCl5 (g) PCl3 (g) + Cl2(g) 121. What do you mean by Lechatelier‘s principle? Explain with an example? 122. Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per followi ...
... 10–1 mol L–1. If value of Kc is 8.3 × 10–3, what are the concentrations of PCl3 and Cl2 at equilibrium?PCl5 (g) PCl3 (g) + Cl2(g) 121. What do you mean by Lechatelier‘s principle? Explain with an example? 122. Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per followi ...
Chemical Reactions
... Lesson 4 – Oxidation-Reduction Reactions (Redox Reactions) Oxidation-Reduction reactions, also known as redox reactions, are reactions that involve a transfer of electrons as the reaction proceeds from reactants to products. This lesson will discuss two primary types of redox reactions. They includ ...
... Lesson 4 – Oxidation-Reduction Reactions (Redox Reactions) Oxidation-Reduction reactions, also known as redox reactions, are reactions that involve a transfer of electrons as the reaction proceeds from reactants to products. This lesson will discuss two primary types of redox reactions. They includ ...
Chemical Equilibrium - Request a Spot account
... number of sandwiches, slices of bread, and slices of cheese were not changing (macroscopic); however, you would still be breaking apart sandwiches as fast as you were making sandwiches (molecular). This constant action on the molecular level is the reason chemical equilibrium is frequently referred ...
... number of sandwiches, slices of bread, and slices of cheese were not changing (macroscopic); however, you would still be breaking apart sandwiches as fast as you were making sandwiches (molecular). This constant action on the molecular level is the reason chemical equilibrium is frequently referred ...
![Keq = [A] [B] [C] [D]](http://s1.studyres.com/store/data/014463360_1-50a2de0db1e8b9a361c4b31c6e85c28d-300x300.png)
Keq = [A] [B] [C] [D]
... c) Solve for x by taking the square root of both sides: 6.0 x 10-9 = x2 and x = 7.7 x 10-5 mol/L d) Therefore, the concentration of both NH3 and HCl gases at equilibrium will be 7.7 x 10-5 mol/L Does this make sense? Keq is very small, so the reaction will not proceed very far to the right, so the c ...
... c) Solve for x by taking the square root of both sides: 6.0 x 10-9 = x2 and x = 7.7 x 10-5 mol/L d) Therefore, the concentration of both NH3 and HCl gases at equilibrium will be 7.7 x 10-5 mol/L Does this make sense? Keq is very small, so the reaction will not proceed very far to the right, so the c ...
CH 4: Chemical Reactions
... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
... • When doing a titration you add titrant (standard solution) to the analyte (unknown concentration solution) until the endpoint or the equivalence point is reached. This point is when you have equal moles of titrant and analyte, from the volume of the titrant and analyte used and the molarity of the ...
