What is total charge of the neptunium nucleus? (93 electrons MW=237.0482)
Consider the reaction 2NO(g) + O2 ---> 2NO2 (g). The following mechanism has been proposed to explain the experimental rate law: 1. 2NO --> and <-- N2O2 (fast) 2. O2 + N2O2 --> 2NO2 (slow) Give the rate law for the proposed mechanism. If necessary, use the pre-equilibrium assumption to determine an expression for the co
What is the value of the rate constant at 380 celsius given that the rate constant at 80 celsius is 7.2*10^-2s^-1
Rearrangement of methyl isonitrile to acetonitrile has activation energy of 25.0 kJ/mol and a rate constant of 8.1*10^-4s-1 @ 80 Celsius. what is the value of the rate constant @ 255.0 celsius?
A reactant undergoes a dissociation reaction A r arrow 2B which follows first order kinetics. The initial concentration of reactant A is .4000 M and after 75.00 hr the concentration of A decreases to 0.0816 M. Determine the half-life of the first order process. There must be a simple equation for this, but my textbook must a
If 50.0 mL of a 0.1 solution of HOAc (Ka = 1.8 x 10^-5) has been titrated to the equivalence point with 0.1 M NaOH solution, what is the pH of the resulting solution? Please explain the math. Thanks.
Calculate the pH of a 1.0 M solution of NH4Cl with the following parameter given: Kb=1.8 x 10^-5 for NH3
Balance the following reactions: Pb(s) + PbO2(s) + H2SO4 --> PbSO4(s) H3AsO4 + Zn(s) --> As + Zn^+2 O3 + NO --> O2 + NO2
nt of natural gas burned is proportional to the amount of oxygen consumed. if 24.0 kg of oxygen is consumed in burning 15.0 kg of natural gas, how much air, which is 23.2% oxygen by weight, is consumed to burn 50.0 kg of natural gas? a. 80.0 kg b. 345 kg c. 31.3 kg d. 135 kg
Only for above OTAs If doing by hand, please write dark onpaper before scanning. Thanks Balance and do total net ionic equations Please Explain math ... __NaCNS +__ KmnO4 +__H2SO4 arrow __K2SO4 + __MnSO4 + __NaCN +__H2O __Cu + __HNO3 __Cu(NO3)2 + __ NO + __H2O __U3O8 +__ H2SO4 arrow __UO2SO4 + __U(SO4)2 + __H20 __B
Only for above OTAs Balance and do net ionic equation Explain Acidic: __Ag+__NO3^-1__Ag^+1 +__NO __IO4^-1 + __I ^-1 __I2 __Cr2O7-2 + __I-1 ® __Cr+3 + __I2 __P + __NO3^-1 __NO + __H3PO4 __SeO4^-2 +__ Cl^-1 SeO3^-2 + __Cl2 __Cr^+3 + __ClO3^-1 __CrO4^-2 + __Cl^-1 __Br2 arrow __Br^-1 + __BrO3^-1
Only for above listed OTAs. All others called in and revoked. pH and POH needed: Please show work 0.4 NH4ClO4 Ka=1.0x10^-14 Kb=1.8x10^-5
I am having trouble with this question: i) A reacts spontaneously with 1 mol/L BNO3, 1 mol/L D(NO3)2 and dilute sulfuric acid. A does not react with 1 mol/L C(NO3)2 ii) B does not react spontaneously with any of the 1 mol/L solutions above or with dilute sulfuric acid. iii) C reacts spontaneously with dilute sulfuri
Please explain: Calculate the Ksp value for Bi2S3 which has a solubility of 1.0 x 10^-15 mol/L @ 25 degrees C.
Please explain order: 1.24 = K[4.42]^n [1.00]^m / o.169 = K[2.21]^n [1.00]^m The answer is overall 2nd order- why???
Please explain which of the following salts is most soluble? CuS(s) Ksp = 8.5 x 10^-45 Ag2S(s) Ksp = 1.6 x 10^-49
Determine if each of the following are Lewis acids or Lewis Bases. NH3 H^+1 AlCl3 Cl^-1
If a solution has a pH = 3.45, what is its pOH, its H positive, and its OH?
How many milliters of 0.1500M NaOH can be made from 250.0 mL of 6.000M NaOH?
Calculate the pOH and pH at 298K of solutions having the following ion concentrations: OH = 1.3 x 10^-2 M.
Given the concentration of hydroxide ions, use the ion product constant of water to calculate the concentration of the other ion at 298 K. OH = 1.3 times 10 to the negative 2 power M
What is the change in the value of PV when a gas is cooled by expansion or diffusion?
As determined from the gas law, the molecular weight of a substance is eight times the atomic weight. How many atoms are in a molecule of the substance?
Define Supercritical fliud. Give an example and it's properties. Which fundemental thermodynamic property is important to the solubility of an analyte in supercritical fluid?
What weight of neon exerts a pressure of 20atm when confined to 2 liters at a temp of 100C?
10.0g of Fe(s) at 98.0 degrees Celsius is placed in 50.0mL of H2O(l) at 20 degrees Celsius. Assuming no energy is lost to the surroundings what is the final temperature of Fe(s) and H2O(l) at thermal equilibrium?
A) UO2<+2> b) As2O3 c) NaBiO3 d) As4 e)P4O6 f) Mg2P2O7 g) Na2S2O3 h) Hg2Cl2 i) Ca(NO3)2
1) AgNO3 + NaBr = 2) BaI2 + ZnSO4 = 3) Na2CO3 + MgCl(Chlorine)2 = 4) KOH + H3PO4 = 5) HCl + Fe(OH)3 =
Balance using the half reaction method in an acidic solution: Cr(NCS)6<4->(aq) + Ce<4+> (aq) = Cr<3+>(aq) + Ce<3+> (aq) + NO3<->(aq) + CO2 (g) + SO4<2->(aq)
Using the reaction of hydrogen chloride (hydrochloric acid) and calcium hydroxide to produce water and calcium chloride answer the following: A. How many moles of hydrochloric acid react with 0.5 moles of calcium hydroxide? B. How many grams of hydrochloric acid react with 1 mole of calcium hydroxide? C. How many grams of cal