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Question - Create an original model of anessentialamino acid (e.g., lysine, threonine) that shows the atoms and bonds in both the backbone and the side chain.
many drugs decompose in blood by a first-order process. in 8.0 hr secobarbital sodium a common sedative reaches a blood
salicylic acid reacts with acetic anhydride to produce acetylsalicylic acid and acetic acid 1111. write the balanced
The Ksp of lead(II) carbonate, PbCO3, is 7.40 × 10-14. Calculate the molar solubility of this compound.
When aluminum reacts with concentrated hydrochloric acid, hydrogen gas evolves. The hydrogen is collected by displacement of water at 22ºC at a total pressure of 750 torr.
What is the boiling point of a solution that is produced by adding 650 g of cane sugar (molar mass is 342.3 g/mol) to 1.5 kg of water? Cane sugar is a molecular substance.
There aew two steps in the extraction of copper metal from chalcocite, a copper ore. In the first step, copper (I) sulfide and oxygen react to form copper (I) oxide and sulfer dioxide:
680 mL of a solution of unknown concentration is diluted to a final volume of 1700 mL where the concentration is found to be 1.2 M. What was the initial molarity
the concentration of a solution sodium iodide ion will be determined by titrating 90 ml of it using potassium
a sample of nitrogen gas kept in a container of vulume 2.43 L and temp 27degree C exerts a pressure of 4.83 atm. calculate the number of moles of gas present
Fe2O3 are actually obtained from 4.86 g Fe, what is the percent yield? c. Under other conditions, the percent yield is 75.6%. How many grams of Fe2O3 are formed from 4.86 g Fe under these conditions
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
An aqueous solution has a vapor pressure of 82.6 at 50 . The vapor pressure of pure water at this temperature is 92.6. What is the concentration of in mass percent
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