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A 381- sample of unknown solution reacts completely with to form 13.1 . What was the concentration of the solution?
Solid aluminum reacts according to the balanced equation. If a total of 830 kJ of heat is produced in the reaction as written, how many moles of Al2S3 are produced?
A student added more KSCN solution that instructed when making standard solution. assuming no other errors were made in the experiment
76 g of Cr2O3 and 27 g of Al completely react to form 51 g of Al2 O3, how many gram of Cr are formed?
Draw the amine from the following: A Hofmann degradation of a primary amine forms an alkene that gives butanal
3.00 moles of Helium gas at 25.0 degrees C and 744 mmHg will occupy what volume A)67.2L B)75.0L C)22.4 L D)6.16 L E)6.03 L
Which of the following expressions hold for 0.10 mol/L Na2HA(aq). (HA2- is the doubly-ionized form of H3A, a weak triprotic acid.)
A 10.3 mL sample of a HCl solution has a pH of 2.000. What volume of water must be added to change the pH to 4.000?
what is the differences between partial and full method validation? under what circumstances are they being carried out?
In the dehydration experiment, several ml of saturated sodium chloride is used to transfer crude product after the initial distillation. Why is saturated sodium chloride, rather than pure water, used for this experiment.
C3h8+5o2=3co2+4h2o How Many Moles Of Oxygen Are Necessary To React Completely With Four Moles Of Propane?
A gas is initially at 1.2 atm, 15.0 L, and O°C. What is the final pressure when the same amount of gas is heated to 10°C and the volume changed to 24.0 L
Draw the structure of the organic compound that exists when lidocaine is in the presence of an acidic solution, for example, hydrochloric acid. You may use standard implicit style for atoms and lone-pairs if you like
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