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Describe exactly how you will prepare 100 mL of 4M KCL. This solution is an "Ionic Strength Adjuster" solution and is usually labeled "ISA"
If the symbol for topaline is To, predict the formula of a compound that presumably would result from the reaction between magnesium and topaline
calculate the mass (g) of the excess reactant after thereaction is complete e. calculate the theoretical yeild (g) of 2,2dibromopropane
Predict the freezing point of a solution prepared by dissolving 8.9 g MgCl2 in 98 g H2O. Kf for water is 1.86 °C m-1. A) 3.5 °C B) -3.5 °C C) 5.3 °C D) -5.3 °C E) -0.51 °C
Rolls of aluminum foil are 300mm wide and 0.013mm thick. What maximum length of aluminum foil can be made from 0.87kg of aluminum?
What mass of water is necessary to prepare each of the following solutions? 1.) 200.0g of 1.30\% saline solution 2.) 80.00g of 15.0\% sugar solution
What is DeltaH°for the hydrolysis of atp to adp and pi ? Assume that the heat capacity of the system is 418 j/kelvin
A turn-of-the-century chemist isolated an aromatic compound of molecular formula C6H4Br2. He carefully nitrated this compound and purified three isomers of formula C6H3Br2NO2, one of which was obtained in very small amounts. Propose a structure fo..
A box of nails contains 90 straight nails and 10 nails too bent to be used. You randomly select 10 nails from the box. What is the probability that you removed 8 straight nails and 2 bent nails? To find the probability, first derive a general expr..
What is the pH of a 5.52E-04 M solution of HCl. Report your answer to two places past the decimal point. WebAssign will check your answer for the correct number of significant figures
Wine is made by adding yeast to grape juice. What concentration of glucose in grams per liter must the grape juice contain to produce wine that is 11% ethanol by volume? (take the density of ethanol to be 0.789 g/mL^-1) C6H12O6(aq)----> 2CH3CH2OH(..
B2H6 + 3O2= B2O3+3H2O ;DELTA H=-2035KJ how much heat is released when a mixture of 7.35 g B2H6 and 2.60 g O2 is burned?
Before running your reaction, you determined that the mixture amount of product you could obtain was 3.74 g. However, after completeing your reaction the mass of product obtained was only 2.486 g. What mass is your theoretical yeild. What is your ..
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