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A gas has a volume of 50.0 cm3at a temperature of -73°C. What volume would the gas occupy at a temperature of -123°C if the pressure stays constant?
Explain why rotation about N-Ca and Ca-C bonds is solely responsible for the secondary structure of a polypeptide
A 3.50-g sample of magnesium hydroxide was treated with 50.0 mL of a 0.500 M aqueous sulfuric acid solution. Calculate the number of grams of magnesium hydroxide that remained undissolved.
cinnamic alcohol is used mainly in perfumery particularly in soaps and cosmetics. its molecular formula is
The chloride content is 65% and you use this to calculate the amount of Ag(aq) to use for precipitation, you will have calculated an excess of Ag(aq).
A sample of diatomic gas has a density of 0.002061 g/mL at 1.8 atm pressure and 25.0 °C. Identify the gas.
What mass in grams of tryptophan is in 0.25 quart of milk, assuming tryptophan accounts for 2.0% of milk by mass and that the density of milk is 1.04 kg/L.
What will be the direction of the reaction when the reactants and products have the following concentrations, CS2=0.14M, Cl2=).18 M,CCl4=0.28 M, and S2Cl2=0.20 M
5-dihydropentalene reacts with two equivalents of butyllithium to form dianion of (C8H6)2-. intend a structure for this dianion and suggest why it form so readily
what is the chemical formula of a homonuclear diatomic gas if it has a pressure of 1.40 atm and a density of 1.82 gl at
It takes 46.0 to raise the temperature of an 11.2 piece of unknown metal from 13.0 to 25.0. What is the specific heat for the metal?
A sodium hydroxide solution of unkown concentration is standardized against potassium biphthate. It takes 37.35 mL of the NaOH solution to neutralize 0.777 grams of KHP. Explain what is the molarity of the sodium hydroxide. Molar mass of KHP= 204 ..
There are two reason why the enols of beta-dicarbonyl compounds, such as pentane-2,4-dione are relatively stable. One is that they are conjugated and the pi-electron overlap due to the conjugation provides additional stability.
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