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Question- A dilute solution is prepared by transferring 45.00 mL of a 0.5616 M stock solution to a 400.0 mL volumetric flask and diluting to mark. What is the molarity of this dilute solution?
Express your answers to three significant figures separated by comma.
A 0.9092-g sample of wheat flour was analyzed by the Kjeldahl procedure. The ammonia formed was distilled into 50.00mL of 0.05063 M HCl; a 7.46-mL back-titration with 0.04917 M NaOH was required. Calculate the percentage of protein in the flour.
find delta h for the combustion of ethanol c2h6o to carbon dioxide and liquid water from the following data. the heat
State the mass balance and charge balance equations for a solution that is .45 M in NaF as well as saturated with CaF2
the hydrogen gas generated is collected over water at 25 c. the volume of the gas is 246 ml measured 1.00 atm.
Dehydration of two alcohols leads to preparation of methylcyclohexene. write chemical equations for both reactions.
In this experiment, 25.00mL of 0.1500 M of EDTA was added to 15.00mL of the unknown Ca2+ solution as well as the EDTA that is in excess was titrated using 0.05000 M of Mg2+. It took 5.40mL of Mg2+ solution to reach the equivalence point. Compute ..
What volumes of CO2 and NH3 at 201 atm and 450.°C are needed to produce 2.54 kg of urea, assuming the reaction goes to completion?
The atomic number of an certain Bromine atom is 35 and the atomic mass (or atomic weight) is 80. In a neutral atom (not an ion). a) How many protons are in this atom
10.0L flask containing 0.200 mol of CH4, 0.300 moles of C2H6 and 0.400moles of C3H8 to 25 degrees Celsius. Calculate the total pressure and partial pressure of each gas.
Problem- Q1) A gas occupies one litre under atmospheric pressure. What will be the volume of the same amount of gas under 750 mm of Hg at the same temperature
Propose a method to accurately measure the melting point of vegetable oil both before and after hydrogenation. Keep in mind that it will be too thick and greasy to insert in a capillary tube
acetylene gas c2h2 is produced as a result of the following reaction. cac2s2h2ol c2h2gcaoh2aq . if 32.0 g of cac2 are
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