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What is the balanced chemical reaction resulting when 50 mL of .2 M KCl and 30.0 mL of 0.30 M Pb(NO_3)_2 are added together?
Explain why rotation about N-Ca and Ca-C bonds is solely responsible for the secondary structure of a polypeptide
How is it possible for temperatures below the ice to be actually warmer than surface temperatures
how many atoms of iodine are in .500 moles of caio32? how many grams of calcium iodate are needed to supply this much
Reaction of 1-methylcyclopentene (above) with HBr might, in principle, lead to a mixture of two alkyl bromide addition products. Draw these two alkyl bromides.
What mass of NaH2PO4 must be added to 1.20 L of 0.20 M Na2HPO4 to make a buffer solution whose pH=6.90? pKa2(H3PO4)=7.21.
assume that the enthalpy fusion of ice is 6020 jmol and does not vary appreciably over the temperature range of 270-290
a mixture of oxygen and hydrogen is analyzed by passing it over hot copper oxide and through a drying tube. hydrogen
The temperature inside my refrigerator is about 40 Celsius. If I place a balloon in my fridge that initially has a temperature of 220 C and a volume of 0.5 liters
Determine the amount of heat evolved in the combustion of 1 mol of methane gas to carbon dioxide and water (liquid). Assume standard conditions apply. Methane is CH4 and may be an important automobile fuel someday.
they condense and then revaporize. During which of these steps is the concentration of the more volatile compound of the mixture increased?
how many moles of C3H8 need to react to release 5280 kJ of energy?
write the balance the eguation fot the neutralization reaction between H2 SO4 KCH
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