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What is the role of KNCS in the equation Fe + NCS yields FeNCS? This is a problem for chemistry lab, we're trying to determine which iron compound is which. Also what would the role of HNO3 be in this experiment?
The solubility of silver sulfate in water is 0.223% (w/v) at 35°C. Calculate the solubility product of this salt at this temperature
You have 875mL of a 0.43 M acetic acid solution. Explain what volume (V) of 1.10 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.98? The pKa of acetic acid is 4.76.
q1. how many grams of benzoic acid c6h5cooh are contained in a 75 ml solution at 0.24 m concentration?q2. what volume
Calculate the molality of the solution and the molar mass of reserpentine.
In this experiment it is presumed that the total number of moles of gas is constant all through the series of expansions. Explain what would the data look like if there was a small leak in the sample cylinder
a what is the magnitude of the average acceleration of a skier who starting from rest reaches a speed of 11.8 ms when
There is a titration of 25.00 mL. The equevalence point is reached after 18.50 mL of 0.171 M HCl has been added . What is the initial concentration of ammonia in the solution? what is the pH of the solution at the equivalence point
A gas mixture composed of helium and argon has a density of 0.853g/L at a 745mmHg and 298K .What is the composition of the mixture by volume?
What is the composition of the buffer to begin with, both in terms of the concentration and the molar quantity of the two major phosphate species
Once 1-butyl-bisulfate is formed, the 1-butanol can act as a nucleophile to form dibutylether. Propose a mechanism for that reaction
Hypothetical element X has 3 stable isotopes. The relative peak intensities are 62.05 for 180.0 u, 100.0 for 184.0 u, and 80.45 for 186.0 u. Explain what is the average atomic mass for X
An experiment shows that a 248 -mL gas sample has a mass of 0.433 g at a pressure of 749 mmHg and a temperature of 29*C. What is the molar mass of the gas
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