Realgrades

H2O has a stronger molecular bond due to the presence of hydrogen bonding with oxygen. - correct answers Which has the stronger intermolecular forces, N2 or H2)? Explain. - correct answers Which gas would behave more ideally at the same conditions of pressure and temperature? CO or N₂? Why? Wax and water can be both a solid and a liquid respectively because the density of the solid wax is higher than that of water. - correct answers Wax consists of long chain non-polar hydrocarbons that...

decreases - correct answers Energy (decreases/increases) with increasing wavelength? increases - correct answers Energy (decreases/increases) with increasing frequency? decreases - correct answers The energy gaps between levels (decrease/increase) as the energy levels increase (n=1 to n=2 to n=3, etc.) 110° - correct answers The O-Si-O bond angles in SiO₂ (quartz) are closest to... linear - correct answers A molecule with 0 lone pairs and 2 bonding electron pairs would be? bent...

Define thermal energy. A) energy associated with the motion of an object B) energy associated with the temperature of an object C) energy associated with the force of an object D) energy associated with the gravity of an object E) energy associated with the position or composition of an object - correct answers B ) Identify an element that is NOT in its standard state. A) Hg(g) B) N2(g) C) O2(g) D) C(s) E) Ne(g) - correct answers A In which of the following substances should hydrogen bondi...

Definition of Polar Covalent Bond - correct answers difference in electronegativity Which of the Molecules are Polar ? CCl4, NH3, NO3-, H2, C3H8, H2O - correct answers NH3, H2O, ( C3H8=?) Which of the salts would have highest FA assuming distance are same ? ( NaI, CaSO4, AlPO4) - correct answers AlPO4 what is used to measure the Ion/Dipole "Glue " - correct answers Enthalpy of Hydration = amount of energy given off when the ion is surrounded by water molecules ( Strongest = MOST...

Which statement is true about kinetic molecular theory? - correct answers The collisions of particles with one another is completely elastic. conversion from atm to mmhg - correct answers 1 atm = 760 mmhg conversion from atm to torr - correct answers 1 atm = 760 torr convert 1.5 atm to mmhg - correct answers 1140 mmhg (1.5 times 760) conversion from atm to psi - correct answers 1 atm = 14.7 psi conversion from atm to Pa (and kPa) - correct answers 1 atm = 101,325 Pa and 101.325 kP...

Chemicals from the laboratory should never be taken _________ the laboratory. - correct answers outside Determine the correct sequence of steps used in carrying out a measurement using a pH probe. Rank them from first to last. - correct answers Remove probe from storage solution Rinse probe with distilled water and blot dry Place probe in solution to be measured Observe readout on meter of sample solution pH Rinse probe, blot dry, then place in storage solution If pH < 8.3, the phen...

Select the correct equilibrium constant expression for the reaction: N2(g) + 3H2(g) ⇄ 2 NH3(g) - correct answers [NH3 ] 2 K= ---------------- [N2 ][H2 ] 3 In the Kinetics of Smell experiment, one of the experiments involved varying the concentration of the acetic acid. Here's a set of student data from that lab: What is the impact of increasing the concentration of acetic acid on the rate as measured by the average time in seconds it took to smell the ester? (exam 3 material)...

Geometry of Alkanes - correct answers tetrahedral Geometry of Alkenes - correct answers trigonal planar Geometry of Alkynes - correct answers linear saturated carbon - correct answers all single bonds Linear - correct answers 180 trigonal planar - correct answers 120 tetrahedral, trigonal pyramidal, bent - correct answers 109.5 Alkane formula - correct answers CnH2n+2 Alkene formula - correct answers CnH2n Alkyne formula - correct answers CnH2n-2 conformational isom...

Which of the following conditions is/are met at the equivalence point of the titration of a monoprotic weak base with a strong acid? - correct answers - The moles of acid added from the buret equals the initial moles of weak base - The pH of the solution is less than 7.00 What color change is exhibited by phenolphthalein during a titration of aqueous acetic acid with aqueous sodium hydroxide? - correct answers - Colorless to pink A statement of the first law of Thermodynamics is that: - c...

Chemical Kinetics - correct answers How long reactions take, appearance of products, disappearance of reactants, concentration change, determining the rate of reactions Rate equation - correct answers k[A]^x[B]^y Overall order equation - correct answers x + y Rate law - correct answers define the rate of reaction, will have concentration/time units Orders - correct answers the exponents that are unrelated to coefficients, determined experimentally Orders can be positive/negative/fra...