Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
10g of CH4 is combusted in a calorimeter that has an empty heat capacity of 18 J/C. The calorimeter contained 150 g of water. If the temperature changed from 25.2C to 30.3C. Calculate the molar heat
Given pKa (acetylene) = 25 and pKa (H2) = 35, predict whether the direction/ position of equilibrium in the following reaction will lie to the right (favors the forward reaction) or to the left (fav
A solution is made by combining 15.0mL of 16.5M acetic acid with 5.52g of sodium acetate and diluting to a volume of 1.50L Calculate the pH
For the reaction N2O4(g) <--> (equilibrium arrows) 2NO2(g), kp = 0.25 at a certain temperature. Calculate the equilibrium pressures of NO2(g) and N2SO4(g) if the initial pressures of the compo
0.12g of compound "Y" dissolves in 10ml of acetone @ 25 deg C and 0.85g of the same compound dissolves in 10 ml of boiling acetone. If 5g of compound "Y" were to be recrystallized from 75 ml acetone
Radical formed by H-abstraction from diethyl ether. Showing curved arrows to where it goes.
Given that the initial rate constant is 0.0130s^-1 at an initial temperature of 20 degree celcius , what would the rate constant be at a temperature of 100 degree celcius
Tin carbonate solid is treated with nitric acid to dissolve tin carbonate to give tin nitrate, water and carbon dioxide. a) Write a balanced equation for the reaction.
Epsom salt is a hydrate with a formula MgsO4.xH2O, where x indicates the number of moles of H2O per mole of MgSO4. After a 1.687 g sample of the hydrate is heated, 0.824 of MgSO4 remains. How many m
The activation energy of a certain reaction is 44.8 kj/mol. At 20 degree celcius , the rate constant is0.0130s^-1 . At what temperature would this reaction go twice as fast
Write balanced equation for the following reaction of aqueous of feCl3, and Mg3(po4)2 to give FePo4 and MgCl2. Molecular Equation. Ionic Equation. Net ionic equation. What the name of this type of r
When Adding H2so4 to form alkene from alcohol what is the solvent used? is it just heat. What about when forming alkene from alkyl halide and NaOMe is used to form Zaitsev is the solvent MeOH. and w
what this pH should be. A. 0.10 M phosphoric acid (H3PO4) B. 0.10 M sodium dihydrogen phosphate (NaH2PO4; the monobasic salt which contains H2PO4-ions) C. 0.10 M sodium hydrogen phosphate (Na2HPO4
307g of an unknown mineral is heated to 98.7 C and placed into a calorimeter that contains 72.4 g of water at 23.6C. the heat capacity of the empty calorimeter was 15.7 J/K. the final temperature of
Its composition is 17.01% Na, 47.46% S and 35.52% O by mass. Determine its empirical formula. If the Molar mass of sodium tetrathionate is 272. What is its actual formula? Na2S2O3 + I = NaxSx + 2Nal
The reaction 4PH3(g) -> P4(g) + 6H2(g) is found to be first order in PH3 with a rate constant of 1.6*10^-2 sec^-1 at 650 C. a)Give the rate law (rate equation) for the reaction and explicitly sta
Identify which of the following solutions may act as buffers by placing a check in the box next to the mixture. A. HNO3 , NaNO3 D. H2SO4, NaHSO4
A 0.0989 g sample of an alcohol is burn in oxygen to yield 0.2160 g Co2 and 0.1194 g H2o. Calculate the mass percentage of C, H, and O in the compound
Write a balanced hydrolysis equation to show why solutions of aluminum chloride are acidic. (Hint; Al3+(aq) ions can be written Al(H2O)63+(aq).)
Calculate the theoretical wavelength in nanometers of the light absorbed when an electron in a hydrogen atom makes a electron transition from level n=2 to n=7 (notated as "2==>7").
The flask was then shaken until the solution was uniform. A 30.0-\rm mL sample of this glucose solution was diluted to 0.500 \rm L. How many grams of glucose are in 100. \rm mL of the final solution
A solution is made by combining 15.0mL of 16.5M acetic acid with 5.52g of sodium acetate and diluting to a volume of 1.50L
How many spectra must be averaged in order to increase the signal-to-noise ratio of a spectrum from 7/1 to 20/1? i took 20/7 and squared
Which of the following expressions is not equivalent to pH? a. log 1/[H+(aq)] b. 14.0-pOH c. -log [H+(aq)] d. -log Kw/[OH-] e
A gas absorbs 0.0j of heat and then performs 35.6j of works. the change in interval energy of the gas is