Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Assuming ideality, calculate the vapor pressure of a 1.00 molal solution of a nonvolatile solute in water at 50 degrees celsius. The vapor pressure of water at 50 degrees celsius is 92.5 torr.
Dihydrogen pthalate (H2C8H4O4) is a diprotic acid. An analyte sample contains 0.127 M KHP and 0.0678 M (H2C8H4O4). What volume of a 0.205 M NaOH solution is required to neutralize 25.0 mL of the
A student rinsed a burette with deionized water but not with Na2S2O3 before filling the burette with Na2S2O3 to perform the titration of thiosulfate with potassium periodate.
Analysis of a compound containing only C and Cl revealed that it contains 33.33% C atoms by number and has a molar mass of 248.75 g/mol. What is the molecular formula of this compound?
Pure copper may be produced by the reaction of copper(I) sulfide with oxygen gas as follows: If 0.330 kg of copper(I) sulfide reacts with excess oxygen, what mass of copper metal may be produced.
A mixture in a container at this temperature has a total pressure of 2.0 atm. The molar percent of N2O4 is 12.0% and NO2 is 88.0%. Calculate the reaction quotient, Qp.
The rate constant for this reaction is 4.8 x 10-3 M-1 days-1 at a given temperature. Suppose you started with 2.6 M of HCN(aq), what would be the molar concentration of HCN(aq) at 20 days?
If a chemical reaction, A + B ---> C + D, is endothermic, what is the sign of ΔH for the reaction? Would the temperature recorded in the calorimeter well for such a reaction increase
Determine the limiting reactant and show your work. How many grams of carbon dioxide will be produced in this reaction?
What is the new pressure, in atm, when the air is placed in tanks that have the following volumes, if there is no change in temperature and amount of gas?
Write a balanced chemical equation for the reaction of 4-Nitrobenzaldehyde and sodium borohydride (NaBH4). If 0.21 g of 4-nitrobenzaldehyde dissolved in 10 mL of methanol is mixed with 0.14 g of so
If 5.20 mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of 0.1000 M HCl was added to 1.00 g of an antacid, how many moles of acid can the antacid counteract per
What is the hybridization of each carbon for the following structure? Explain each one and provide the line structure. Supposedly there should be two hybridized sp2.
What final temperature, in degrees celcius, is needed to change the volume of the gas to each of the following, if n and P do not change?
Why would you expect the heats of neutralization for HCl and Nacl reaction and a HNO3 and KOH reaction to be the same, within experimental error? What is the net ionic reaction for both acid-base re
Methane (CH4), ammonia (NH3), and water (H2O) all have octets around the central atom. What are the shapes and bond angles of each of these molecules? Explain why they have different bond angles.
Using enthalpies of formation, calculate the quantity of heat produced when 10.0 g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming. Express y
What is the theoretical yield (in grams) of silver if 8.75 g copper are mixed with 0.350 mol AgNO3(aq)? The balanced equation for this reaction is shown below.
The first-order decomposition of SO2Cl2 to sulfur dioxide gas and chlorine gas at 320°C has a half-life of 8.75 hr. If one begins with 600. mmHg of pure SO2Cl2 in a 5.00-L flask at 320°C, ho
It is desired to produce an aqueous solution of pH=8.75 by dissolving one of the following salts in water at 298 k. Which salt would you use and at what molar concentration?
Write the full chemical equation upon the addition of NaOH to each of the 3 alanine species mentioned. If there's no reaction, indicate there's no reaction and why.
Pb accumulates at a rate of 0.03mg m-2 day-1. How many metric tons (1 metric ton=1000kg) of Pb fall on the 535 square kilometers of Chicago in 1 year?
What is the molar solubility of lead II bromide in 0.5M potassium bromide solution? what is the molar solubility of lead II bromide in 0.5M lead II nitrate solution?
The concentration of the alkane C20H42 (FM 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL and find the molar concentration of C2
A sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution, what is the CI- concentration, in milli