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What is a balanced equation to represent the formation of the precipitate formed between lead (II) and chloride?
What mass of this substance must evaporate in order to freeze 170 of water initially at 23? (The heat of fusion of water is 334 the specific heat of water is 4.18 .
Calculate the atomic mass of neon (Ne) which is composed of three naturally occurring isotopes with the following natural abundances and masses
Calculate the ph of the solution made by adding 0.50mol of HOBr and 0.30 mol of KOBr to 1.00 L of water. The value of Ka for HOBr is 2.0 x 10^-9.
Calculate deltaG for this reaction at 298K in kJ. What can be said about the spontaneity of the reaction at 298K? (1) spontaneous in the reverse direction
If 0.100 mole "recovered amine" had an [a]D=+20.35 degrees, how many moles of (-)- amine and how many moles of (+)-amine would there be in the sample
764 mL of chlorine gas are added to the reaction chamber at STP. How many grams of silicon metal are needed to react with this volume of chlorine gas?
An empty aerosol can at 25 degree celcius still contains gas at 1.00 atmosphere pressure. If an empty can is thrown into a 488.2 degree celcius fire, what is is the final pressur in the heated can.
can someone please answer these questions regarding the endo and exo products formed through two different transition states in the reaction between furan and maleic anhydride.
A solution of potassium permaganate is standardized with iron metal, a primary standard. The iron is dissolved in acid, reduced to Fe(II), and titrated with permanganate.
A solution of HClO4 was standardized by dissolving .4125g of primary-standard-grade HgO in a solution of KBr. The liberated OH consumed 46.51mL of the acid. Calculate the molarity of the HClO4.
What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?
What mass of LP gas is necessary to heat 1.3 of water from room temperature (25.0 ) to boiling (100.0 )? Assume that during heating, 16% of the heat emitted by the LP gas combustion goes to heat the water.
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