Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
At 25 degrees C 15.00 g of solid ammonium hydrogen sulfide is introduced into a 500ml flask, the flask is sealed, and the system is allowed to reach equilibrium.
Calculate the numbers of kilograms of copper sulfide could be formed from the reaction of .9 mol of copper with excess sulphur?
What is the proximate volume of one drop of an aqueous solution? Depending upon the tip of a dropper pipet, there are approximately 25 drops per milliliter of water.
Calculate the molarity of 10% concentrated HCL? Of 5% sodium hyrdoxide? Determine how many moles of each reagent are in 1 mL of these solutions?
Estimate the minimum and maximum number of bonds that chlorine (Cl) forms? Assume chlorine bonds with hydrogen. Is the minimum 1and the maximum 7?
Assuming that both of these compounds consist of molecules that contain only one atom of phosphorus per molecule, 2 compounds that contain only phosphorus and an unknown element x have ratios mass x
A pound of M&M's candies contains 320gcarbohydrate, 96g fat, and 21g protein. Determine the fuel value in kJ in a 42-g serving? Determine how many Calories does is providing?
Determine the pH and p OH for a0.50M solution of HCN by using the approximation method. Calculate the value of Kb for HCN by using Kw, Ka, and relationships, Kb.
Determine the percent by mass of acetic acid, CH3COOH, in a solution of 0.620M CH3COOH. Suppose the density of the solution is 1.07 g/mL.
At SATP 1750mL of hydrochloric acid is allowed to react with the 150L of sulphur dioxide to produce the chlorine gas and the hyposulphurous acid, the concentration of the acid was?
Write down the formula equation and the net ionic equation for the neutralization reaction among the indicated substances.
Allosteric regulation of myoglobin function refers to positive cooperatively of oxygen binding to this protein.Beta pleated sheets can exist with their peptide chains either in parallel or anti-parall
A buffer is a chemical that can be used to make solutions that resist change in pH near the the buffer's pKa upon addition of an acid or a base.
A piece of magnesium metal weighing the 1.56 g is placed in the 100.0mL of 0.100 M AgNO3 at 25°C. Determine the [Mg2+] and [Ag+] in the solution at equilibrium.
Determine how much energy is required to raise the temperature of a 1000gallon tub of water from 75 degrees Fahrenheit to 100 degrees Fahrenheit?
A quantity of 54.2 g of the compound is heated in an oven to drive off the water. A certain hydrate has the formula MgSO4 x H2O. If the steam generated exerts a pressure of 24.8 atm in a 2Lcontainer a
How can find out the limiting molar conductivities of NA+ AND OH- Determine the hydrodynamic radius of these ions.
The qualitative analysis scheme contains a vast array of reactions involving the precipitation, formation of oxidation-reduction and the coordination complexes.
Determine the % dissociation and the Ka for trichloracetic acid if the trichloroacetic acid (CCL3COOH) is a corrosive acid used to precipitate proteins and the PH of a 0.050 M solution of it is1.40
Determine the volume of air calculated by the spirometer in cubic centimeters when a lung-full of air (350 cm 3) is exhaled into a spirometer, advice that measures lung capacity.
Determine the standard free-energy change ΔG o for the following reaction at the 25oC from standard electrode potentials. Suppose you will need to use the relevant half-reactions to ba
What volumes of equimolar aqueous solutions of KH2PO4 and K2HPO4 must she combine to make 100 mL of the pH 7.00 buffer? A microbiologist is preparing a medium on which to culture E.
Determine the concentration of each ion after mixing when the 12.0mL of 0.30M FeCl3 is added to the 24.0 mL of 0.45MSr(NO3)
Calculate the ionization constant of the acid. When the 40.0 mL of a weak monoprotic acid solution is titrated with the 0.100 M NaOH, the equivalence point is reached when the 35.0 mL base have been
The "fluoride" is often present in the range of 1.4 ppm. But, in reality, this total fluoride is a mixture of F- and HF because HF is a weak acid.