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A 45-g piece of ice at 0 degree C is added to a sample of water at 8 degrees C. All of the ice melts and the temperature of the water decreases to 0 degree C. How many grams of water were there in the sample?
Find the volume and the intermolecular force present in ammonia at STP in the following reaction and What is the intermolecular force is present in NH3(g).
Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms, called octanes. One of the cleanest-burning octanes is a compound called 2,3,4-trimethylpentane, which has the structural formula shown in the figure.
identify the incorrect names of formulas.
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
A solution of 1.138g of naproxen in 25g benzene has an osmotic pressure of 4.00 atm at 20 C. The density of benzene is 0.8787g/mL. Assume the density of the solution equals the density of pure benzene. What is the molar mass of haproxen
Which of the following substances has the highest boiling point a. HF b. Ar c. CH2Cl2 d. C2H6
This is mixed in with water, but I can't find anything in my book showing examples of this. The following is what I need help with:
The rate constant for the second order reaction 2NO2 ???&??; N2O4 is 2.79 L/mol •min at 48 oC. If the initial concentration of NO2 is 1.05 M , what is the half-life
Calculate the number of ATP molecules that are produced from the biological oxidation of one molecule of each of the following to CO2 and H2O
The possible compounds are listed below. Two methods of positive identification are required for each compound. Benzoic acid benzoin 1,4-dibromobenzene flourene o-Toluic Acid 4-aminoacetophenone
Aminotransferases are enzymes that catalyze the interconversion of amino acids and ?-keto acids. In this way, they can provide the carbon needed for gluconeogenesis from amino acids supplied by dietary protein
How can you separate the three compounds used in a experiment by extraction if you begin the process (by mistake) with an aqueous NaOH-solution (instead of NaHCO3- solution)
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