Give answer all questions only option Which has maximum number of molecules among thefollowing ?(a) 44 g of CO2(c) 8 g of H2(b) 48 g of O3(d) 64 g of SÓ2O dWhen 22-4 litres of H2(g) is mixed with 11-2 litres of Cl2 (g),each at S.T.P, the moles of HCI (g) formed is equal to :(a) 0-5 mol of HCI (g) (b) 1-5 mol of HCI (g)(c) 1-0 mol of HCI (g) (d) 2-0 mol of HCI (g).The pair of ions having same electronic configurationis :(a) Cr3+, Fe3+(c) Fe3+; Co3+(b) Fe3+, Mn2+(d) Sc3+, Cr3+d.* For the electrons of oxygen atom, which of the followingstatements is correct ?(a) Zeff for an electron in a 2s orbital is the same asZeff for an electron in a 2p orbital.(b) An electron in the 2s orbital has the same energyas an electron in the 2p orbital.(c) Zett for an electron in 1s orbital is the same as Zeft* for an electron in a 2s orbital.(d) The two electrons present in the 2s orbital havespin quantum numbers mg but of opposite sign.

Number of Moles = No. of molecules/NA NA = 6.022×1023 = Avagadro's No. Number of moles=…

Which has maximum number of molecules among the following ? (a) 44 g of CO2 (c) 8 g of H2 (b) 48 g of O3 (d) 64 g of SO2 • When 22-4 litres of H2(g) is mixed with 11-2 litres of Cl2 (9), each at S.T.P, the moles of HCI (g) formed is equal to : (a) 0-5 mol of HCI (g) (b) 1-5 mol of HCı (g) (c) 1-0 mol of HCI (g) (d) 2-0 mol of HCI (g). b. The pair of ions having same electronic configuration i : (a) Crt, Fe3+ (c) Fe3+, Co3+ (b) Fe3+, Mn2+ (d) Sc3+, Cr3+

Which has maximum number of molecules among the following ? (a) 44 g of CO2 (c) 8 g of H2 (b) 48 g of O3 (d) 64 g of SO2 • When 22-4 litres of H2(g) is mixed with 11-2 litres of Cl2 (9), each at S.T.P, the moles of HCI (g) formed is equal to : (a) 0-5 mol of HCI (g) (b) 1-5 mol of HCı (g) (c) 1-0 mol of HCI (g) (d) 2-0 mol of HCI (g). b. The pair of ions having same electronic configuration i : (a) Crt, Fe3+ (c) Fe3+, Co3+ (b) Fe3+, Mn2+ (d) Sc3+, Cr3+

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter8: Thermochemistry

Section: Chapter Questions

Problem 12QAP: The heat of neutralization, Hneut, can be defined as the amount of heat released (or absorbed), q,...

See similar textbooks

Similar questions

In the presence of nitric acid, UO2+ undergoes a redox process. It is converted to UO22+ and nitric oxide (NO) gas is produced according to the following unbalanced equation: H+(aq)+NO3(aq)+UO2+(aq)NO(g)+UO22+(aq)+H2O(l) If 2.55 102 mL NO(g) is isolated at 29C and 1.5 atm, what amount (moles) of UO2+ was used in the reaction? (Hint: Balance the reaction by the oxidation states method.)
The heat of neutralization, Hneut, can be defined as the amount of heat released (or absorbed), q, per mole of acid (or base) neutralized. Hneut for nitric acid is -52 kJ/mol HNO3. At 27.3C, 50.00 mL of 0.743M HNO3 is neutralized by 1.00 M Sr(OH)2 in a coffee-cup calorimeter. (a) How many mL of Sr(OH)2 were used in the neutralization? (b) What is the final temperature of the resulting solution? (Use the assumptions in Question 11.)
The nitrogen content of organic compounds can be determined by the Dumas method. The compound in question is first reacted by passage over hot CuO(s): CompoundCuO(s)HotN2(g)+CO2(g)+H2O(g) The product gas is then passed through a concentrated solution of KOH to remove the CO2. After passage through the KOH solution, the gas contains N2 and is saturated with water vapor. In a given experiment a 0.253-g sample of a compound produced 31.8 mL N2 saturated with water vapor at 25C and 726 torr. What is the mass percent of nitrogen in the compound? (The vapor pressure of water at 25C is 23.8 torr.)
Effervescent tablets contain both citric acid (C6H8O7) and sodium bicarbonate (NaHCO3) and release carbon dioxide gas when dissolved in water as well as forming trisodium citrate (Na3C6H5O7) and water. A typical effervescent tablet contains 1.00 g of citric acid and 1.92 g sodium bicarbonate. (a) Assuming that carbon dioxide acts as an ideal gas, determine the work done due to the evolution of carbon dioxide by the dissolution of one effervescent tablet in water at 25.0 °C and atmospheric pressure (1 atm i.e. 101325 Pa).
Photosynthesis in plants converts carbon dioxide and water into glucose (C6H1206) and oxygen according to the equation below. 6CO2 (g) + 6H20a → C6H1206 (s) + 602 (g) Substance СО2 (8) H20M C6H1206 (s) 02 (g) kJ AH°; (mol -393.5 -285.8 -1273.3 J H° mol. k 213.6 69.9 209.2 205.0 Calculate the AHº, ASº, and AGº. Is the reaction spontaneous at standard conditions?
What mass in grams of NaN, is required to produce 50.2 L of N2 gas density = 1.25 g/L according to the balanced chemical reaction:
2.24 L of CO2 forms at STP when 11.2 g of an unknown metal carbonate decomposes. What is the molar mass of the metal carbonate? MCO3 → MO + CO₂ Molar Mass of MCO3 = [?] g/mol Molar Mass (g MCO₂) Enter
In the preparation of 60 mL Magnesium citrate in the laboratory, you are required to: calculate for the volume of Carbon dioxide released from the hydrated double salt of Magnesium carbonate when reacted with Citric acid if 2.67 g of Magnesium carbonate is used. MW of Magnesium carbonate = 486.65 g/mol H3C8H507 = 192.12 g/mol 474.15 mL 385.71 mL 365.20 mL 496.23 mL
205L of carbon dioxide at STP is compressed and then dissolved in 10.0L of water. What is the molar concentration of teh resulting solution?
Ideal gas law is used for the working of airbags in vehicles. When airbags are deployed, they are quickly filled with different gases that inflate them. Assume that you are working in a car manufacturing company assigned in the production and installation of the airbags, what will you consider in making the air bags? Explain your reason/s.
4. Containers A, B, and C are attached by closed stopcocks of negligible volume. If each particle shown in the picture represents 10* particles, (i) How many blue particles and black particles are in B after the stopcocks are opened and the system reaches equilibrium? (ii) How many blue particles and black particles are in A after the stopcocks are opened and the system reaches equilibrium? (iii) If the pressure in C, Pc, is 780 torr before the stopcocks are opened, what is Pc afterward? (iv) What is PB afterward?
Wine goes bad soon after opening because the ethanol CH3CH2OH in it reacts with oxygen gas O2 from the air to form water H2O and acetic acid CH3COOH , the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 1.2g of oxygen gas?