Results for "H2O"

Properties of H2O

Simple Solubility Rules for Salts in H2O

LT 1.2 C, P, H2O, N Cycles

BIOC 503 - ELectron Transport Chain (ETC)

Week 3: Electrolytes Na+ and H2O (Dr. Zhang)

Solubility Rules for Ionic Compounds(in H2O @ 25 C)

Inorganic Chemistry and Properties of H2O

Reactivity Series: H2O, Acid, C, H

H2O Unit - Chemistry

H2Ohio Wetland Guide (Species/Family)

Thủy trị liệu-Vận động trong H2O (PTTL)

Hydrogen peroxide low temperature sterilization (H2O2)

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 52. A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressure of Ne is __________ atm. A) 0.60 B) 1.5 C) 1.0 D) 0.35 53. Of the following gases, _____________ will have the greatest rate of effusion at a given temperature. A) NH3 B) CH4 C) Ar D) HCl 54. Which noble gas is expected to show the largest deviations from the ideal gas behavior? A) helium B) neon C) argon D) krypton 55. Together, liquids and solids constitute _______ phases of matter. A) the compressible B) the fluid C) the condensed D) the disordered 56. What is the predominant intermolecular force in liquid CBr4? A) dispersion B) dipole-dipole C) ion-dipole D) hydrogen bonds 57. Of the following substances, ____________ has the highest boiling point. A) H2O B) CO2 C) CH4 D) Kr 58. Of the following substances, ____________ has the lowest boiling point. A) Kr B) Ar C) Ne D) Xe 59. What is the predominant intermolecular force in liquid HBr? A) dispersion B) dipole-dipole C) ion-dipole D) hydrogen bonds 60. The total pressure of a mixture of O2 and N2 is 730 torr. The partial pressure of N2 is 0.78 atm. The partial pressure of O2 is A) 0.18 atm B) 0.22 atm C) 0.26 atm D) 0.78 atm

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 14. Which of the following compounds would you expect to be ionic? A) SF6 B) H2O C) H2O2 D) CaO 15. Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N2 (g) + 3H2 (g) à 2NH3 (g) A 9.3-g sample of H2 requires ____________ g of N2 for a complete reaction. A) 43 B) 1.3 x 102 C) 3.9 x 102 D) 4.6 16. What is the frequency of light (s-1) that has a wavelength of 1.23 x 10-6 cm? A) 3.69 B) 2.44 x 1016 C) 4.10 x 10-17 D) 9.62 x 1012 17. Which sketch represents an orbital with the quantum numbers n = 3, l = 1, ml = 0? A) B) C) D) 18. What color of visible light has the longest wavelength? A) blue B) violet C) red D) yellow 19. According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the __________ of an electron. A) mass B) color C) momentum D) shape 20. The wavelength of a photon that has an energy of 5.25 x 10-19 J is ___________ m. A) 3.79 x 10-7 B) 2.64 x 106 C) 2.38 x 1023 D) 3.79 x 107 21. There are ___________ orbitals in the second shell. A) 2 B) 4 C) 9 D) 18

Part II. Multiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 5. Which of the following molecular formulas is also an empirical formula? A) C6H6O2 B) C2H6SO C) H2O2 D) C6H6 6. What is the coefficient of O2 when the following equation is completed and balanced? C4H8O2 + O2 à ______________ A) 2 B) 3 C) 5 D) 6 7. Analysis of a compound shows that it contains 3.75 moles of C, 7.50 moles of H, and 1.25 moles of N. What is its empirical formula? A) CHN B) C3H6N C) C4H8N D) C5H9N2 8. What is the molar mass of Ca(NO3)2? (AW Ca = 40.1 amu; N = 14.0 amu; O = 16.0 amu) A) 70.1 g/mol B) 62.0 g/mol C) 164.1 g/mol D) 102.1 g/mol 9. Which of the following is an alkali metal? A) Mg B) Fe C) Al D) Na 10. A compound contains 40.0% C, 6.71% H, and 53.29% O by mass. The molecular weight of the compound is 60.05 amu. The molecular formula of this compound is A) C2H4O2 B) CH2O C) C2H3O4 D) C2H2O4 11. How many molecules of water, H2O, are there in 28.0 grams of water? A) 9.37 x 1023 B) 1.56 C) 578 D) 1.56 x 1025 12. When a hydrocarbon burns in air, what component of air reacts? A) nitrogen B) oxygen C) carbon dioxide D) water 13. When the following equation is balanced, the coefficient of Fe3O4 is__________. Al + Fe3O4 à Al2O3 + Fe A) 1 B) 2 C) 3 D) 4

ele, h2o, acid, balance no terms

H2O and Solutes Moving in Plants

H2O requirements

Trace the movement of electrons as well as proton movement through the electron transport chain from NADH to H2O

Redox reactions between Cr 3+ and H2O2, Zn and Cr2O7 2- and Cu2+ and 2I-