# Chemistry Questions and Answers

Boiling Point and Freezing Point...?
Boiling Point Elevation/Freezing point?
Boiling Point of Alkyl Halides? Urgent?
Boiling Point Question. Check my Work!!?
Boiling point question?
Boiling Point?
Boiling points-?
Boiling water?
Boltzmann Distribution question?
Bomb Calorimeter Equation?
Bomb out of sparklers?
bond angles, shape of C2H6 and why?
bonding agents for pressing pills?
bonding question?
Bonding question?
Boron has two naturally-occurring and stable isotopes what do they look like?
Boron? how to find the atomic weight?
bottle of wine , 12.5% ethanol by volume.density .789 g/cm3, what is the solvent, grams of solute/solution?
boyles law deals with the effect of temperature on the volume of gas - true or false?
BRAFORD ASSAY!! lab?
Breathing.......?
Breeder ractors are used to convert nonfissionable nuclide 238over92 U to a fissionable product.?
BRIEFLY describe how reverse osmosis is used to purify sea water?
Bubbles of gas often form in tap water when left at room temperature. Do you think this gas is water vapor or?
buffer acid base help?
buffer question, pls help?
Buffer regions for polyprotic acid?
buffer solution HELP!?
Buffer solutions?
Buffer Solutions?
Buffered solutions?
Bunch of questions about Glycoside Hydrolase. Please help!?
Bunsen Burner Questions?
Burning Paper/Plastic?
burning/energy/heat problem?
butane collected over water; temp 25C, .95atm what is Partial pressure of butane in graduated cylinder 100mL?
Butyric acid?
By calculating the free energy change determine whether the following reaction?
By calculating the free energy change determine whether the following reaction is spontaneous at 298K?
By calculating the free energy change determine whether the following reaction?
By what factor does [OH-] change when the pH increases ...?
By what process can octane be converted into 2,2-dimethylhexane?
C(30)H(62) is a nonpolar compound that is solid and water is highly hydrogen-bonded but isn't, why?
c.How long does salivary digestion continue in the stomach?
C18 HPLC column?
C20H41OH is an alcohol.State and explain whether the alcohol is a solid,liquid,or gas at room temperature.?
C2H4O2 + NaOH yields??
C6H14 how to draw isomer structures??
C6H14 how to draw resonance structures??
c6h8no4p ---what chemical formula is this and how does its diagram look like?
Calcium carbonate reacts with dilute hydrochloric acid to produce carbon dioxide.?
calcium hydroxide and hydrogen = ?
Calcualte the # of moles of Al2O3 that are peoduced when 0.60 mol of Fe is peoduced in the following reaction.
Calculate Kp at this temperature for the reaction?
Calculate Kp at this temperature for the reaction?
Calculate Kp at this temperature for the reaction?
Calculate Kp at this temperature for the reaction?
Calculate Kp for the reaction...Please!!?
Calculate Kp for the reaction: 2H2S(g) + SO2(g) = 3S(s) + 2H2O(g)?
Calculate Kp for the reaction?
Calculate Kp for the reaction?
Calculate Kp for the reaction?
Calculate Kp for the reaction?
Calculate Kp for the reaction?
Calculate [ H + ] of a 0.210 M solution of Aniline C6H5NH2 Kb = 7.40e-10?
Calculate [ H + ] of a 0.270 M solution of Aniline C6H5NH2 Kb = 7.40e-10?
Calculate [ H + ] of a 0.310 M solution of Hydroxylamine HONH2 Kb = 1.10e-8?
Calculate [ H + ] of a 0.310 M solution of Hydroxylamine HONH2 Kb = 1.10e-8?
Calculate [ H + ] of a 0.340 M solution of Aniline C6H5NH2 Kb = 7.40e-10?
Calculate [ H + ] of a 0.370 M solution of Hydroxylamine HONH2 Kb = 1.10e-8?
Calculate [ H + ] of a 0.380 M solution of Hydroxylamine HONH2 Kb = 1.10e-8?
Calculate [ H + ] of a 0.400 M solution of Aniline C6H5NH2 Kb = 7.40e-10?
Calculate [ OH - ] of a 0.220 M solution of Hydroxylamine HONH2 Kb = 1.10e-8 ?
Calculate [ OH - ] of a 0.270 M solution of Hydroxylamine HONH2?
Calculate [ OH - ] of a 0.330 M solution of Pyridine C5H5N Kb = 1.70e-9?
Calculate [ OH - ] of a 0.380 M solution of Aniline C6H5NH2 Kb = 7.40e-10?
Calculate [H], [OH] and ph for a solution of 49.9 mL concentrated HCl and 18.4 mL concentrated HNO3 and 1L H2O
Calculate [H+]?
Calculate Binding Energy...?
calculate concentration?
calculate delta H for the reacton HCl + CH(g) --> CH3Ch2Cl(g)?
Calculate entropy universe in J/mol-K at 298.15 K?
Calculate Kc for the reaction at this temperature. 4 NH3(g) + 3 O2(g) <---> 2 N2(g) + 6 H2O(g)?
Calculate Kc for the reaction at this temperature. H2(g) + I2(g) <-----> 2HI(g)?
calculate Kp at the same temperature?
calculate Kp at the same temperture?
calculate Kp at the same temperture?
calculate Kp at the same temperture?
Calculate Kp at this temperature for the reaction ?
Calculate Kp?
Calculate number of moles of hydrogen produced if there are 3.7 moles of sodium?
Calculate OH and pH for?
Calculate pH of sol prepared by adding .296g HCl to 250mL H20?
Calculate the atomic mass of the element having the following distribution of isotopes.?
calculate the average atomic mass of chromium. its composition is: 83.79% with a mass of 51.94amu?
calculate the change in free energy (kJ) for the reaction NO(g)+O3----NO2(g)+O2(g)?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the change in free energy (KJ) for the reaction?
Calculate the composition of the vapor (in terms of mole fractions)?
Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.?
calculate the concentration of the H^3O+ and OH- ions in an aqueous solution of pH 5.0?
Calculate the concentration?
Calculate the concentrations of all species present in a 0.29 M solution of ethyleneammonium chloride?
Calculate the empirical formula of the compound whose composition is 56.4% Mn and 43.6% S.?
Calculate the energy of one photon of yellow light whose wavelength is 589 nm?
Calculate the enthalpy of hydration (KJ) of 0.670 moles of CsOH?
Calculate the enthalpy of hydration (KJ) of 1.150 moles of CsI.?
Calculate the enthalpy of hydration (KJ) of 1.150 moles of CsI.?
Calculate the enthalpy of hydration (KJ) of 0.750 moles of CsI.?
Calculate the enthalpy of solution (KJ) of 0.670 moles of KCl.?
Calculate the enthalpy of solution (KJ) of 1.090 moles of KCl.?
Calculate the enthalpy of vaporization.?
calculate the equilibrium concentration of NH3 (mol/L).?
Calculate the final pH when the following pair of solution is mixed.?
Calculate the formula mass?
Calculate the freezing point of 50% aqueous soln of ethylene glycol [C2H4(OH)2]?
calculate the freezing point of a 0.2 m CaCl2 aqueous solution, assuming it dissociates completely to form ion
Calculate the heat required to convert 27.3 g of C2H6O, from a solid at -140oC into thegaseous state at 102oC
Calculate the heat liberated when .200 mole of Ba(OH)2 reacts with excess HCl if:?
Calculate the increase in Temp.?
Calculate the kilojoules for 2NH3+Cl2->N2H4+2HCl?
calculate the longest possible wavelength, in nanometers, of light that can ionize the metal.?
Calculate the mass in grams of hydrogen chloride produced when 5.6 L?
calculate the mass of 600ml of helium if the density is 0.0002g/ml?
Calculate the mass of Na2Cr2O7 to dissolve in 200g of water to prepare 1.5 m Na2Cr2O7(aq) solution.?
Calculate the mass of Na2Cr2O7 to dissolve in 200g. of H2O to prepare 1.5% by mass Na2Cr2O7(aq) solution.?
calculate the mass of the given element in each of the following compounds?
Calculate the molalities of the following aqueous solutions?
Calculate the molality of each of the following solutions.?
Calculate the molality of the solute.?
Calculate the molality of the solute?
Calculate the Molar Absorptivity?
Calculate the molar concentration of OH- ions in a 0.050 M solution of C2H5NH2, (Kb = 6.4 x 10-4).?
calculate the molar mass of a gas that diffuses three times faster than oxygen?
Calculate the molar mass of magnesium chloride, MgCl2.?
Calculate the molarity and the molality of an NH3 solution made up of 25.0 g of NH3 in 70.0 g of water.?
Calculate the molarity of the solute?
Calculate the molarity: 40 grams of sodium hydroxide (NaOH)?
Calculate the most probable speed and average kinetic energy per mole for each of the following.?
Calculate the normal boiling point (Kelvin).?
calculate the number of molecules in 16 g O2 and 288g of Cl2?
calculate the number of moles of HCl that must be added to 1L of 1M NaC2H3O2 to produce solution at pH:pKa&4.2
Calculate the percent composition of K in potassium chlorate..?
Calculate the percent ionization in a solution of 0.10 M NH3?
Calculate the percent ionization of benzoic acid at the following concentrations?
Calculate the percent ionization of hydrofluoric acid at 0.60 M:?
calculate the percentage of water in each of the following hydrates.?
Calculate the pH after 0.13 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.04 M KF?
calculate the pH at the stoichiometric point of the titration of 25.00 ml of 0.020M NH3 with 0.015 HCL (AQ)?
calculate the pH during titration??
Calculate the pH for .250M Ca(OH)2?
Calculate the pH for .455 M HNO3?
Calculate the pH for a titration of 0.20M CH3COOH (aq) with 0.20 M NaOH (aq)?
Calculate the pH of .100M of H2CO3?
Calculate the pH of 0.100 M H2CO3?
Calculate the pH of a 0.100 M solution of NaNO2?
Calculate the pH of a 0.120 M solution of NaNO2?
Calculate the pH of a 0.130 M solution of NaNO2??
Calculate the pH of a 0.190 M solution of NaNO2?
Calculate the pH of a 0.190 M solution of NaNO2?
Calculate the pH of a 0.190 M solution of NaNO2?
Calculate the pH of a 0.200 M solution of NaNO2?
Calculate the pH of a 0.380 M solution of NH4I?
Calculate the pH of a 0.380 M solution of NH4I?
Calculate the pH of a 0.390 M solution of NH4I?
Calculate the pH of a 0.420 M solution of NH4I?
Calculate the pH of a 0.430 M solution of NH4I?
Calculate the pH of a 0.450 M solution of NH4I ?
Calculate the pH of a 0.460 M solution of NaOCl?
Calculate the pH of a 0.470 M solution of NaOCl?
Calculate the pH of a 0.490 M solution of NaOCl?
Calculate the pH of a .44M solution of NaOCl with a congjugate acid Ka of 3.5x10-8.?
Calculate the pH of a 0.010M solution of NaCN. The Kb of CN- is (2.1)(10^-5)?
Calculate the pH of a 0.0316 M solution of the strong base RbOH?
Calculate the pH of a 0.430 M solution of NH4I; i have no idea how to attempt this.?
Calculate the pH of a 0.59 M CH3COONa solution.?
Calculate the pH of a 3.26 x 10-8 M solution of HBr.?
Calculate the pH of a buffer solution that is 0.04 M NH4Cl (aq) and 0.030M NH3 (aq?
Calculate the pH of a buffer solution?
Calculate the pH of a mixture containing equal volumes of .140M NH4Cl and .14M NH3.?
Calculate the pH of a mixture containing equal volumes of?
Calculate the pH of a mixture containing equal volumes of?
Calculate the pH of a mixture containing equal volumes of?
Calculate the pH of a mixture containing equal volumes of?
Calculate the pH of a mixture containing equal volumes of?
Calculate the pH of an acetic acid and sodium acetate solution?
Calculate the pH of each of the following solutions.( Kb = 1.1e-8).?
Calculate the pH of the buffer?
Calculate the pH of the solution resulting when 10.00 ml of 0.150 M NaOH (aq) is added to 25.00 ml of 0.100 M?
Calculate the pH of the solution resulting when 10.00 ml of 0.150 M NaOH (aq) is added to 25.00 ml of 0.100 M?
Calculate the pH of the solution that results from the addition of 0.030 moles of?
Calculate the pH of the solution that results from the addition of 0.040 moles of HNO3 to a buffer?
Calculate the pH of the solution that results from the addition of 0.040 moles of HNO3 to a buffer made