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The density of phosphorus vapor at 310 degrees celcius and 775 mmHg is 2.64g/L. what is the molecular formula of the phosphorus under these conditions?
If the internal ph of muscle cell is 6.80, what is the HPO4^2-/H2PO4^- ratio in this cell. the values are pk1=2.12, pk2=7.21, and pk3=12.32 for phosphoric acid, h3po4.
Calculate the molality, molarity, and mole fraction of FeCl3 in a 36.9 mass % aqueous solution
A student is asked to prepare a buffer solution at pH = 8.60, using one of the following weak acids: HA (Ka = 2.7 X 10^-3) HB (Ka= 4.4X10^-6) and HC (Ka = 2.6 X 10^-9). Which acid should she choose? Why? (Hint: pKa = -logKa)
What volume of each of the following acids will react completely with 50.31 mL of 0.146 M NaOH?
write the balanced equation for the reaction of the active ingredients in Gaviscon Extra strength with excess acid.
If 132 mL of wet H2 is collected over water at 24°C and a barometric pressure of 736 torr, how many grams of Zn have been consumed?
The density of liquid oxygen at its boiling point is 1.14kg/L , and its heat of vaporization is 213kJ/kg. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized.
Calculate the number of molecules in 7.00 moles H2S, Using Avogadros number calculate the number of molecules in 7.00 moles H2S
A flask contains 22.5 g of an unknown liquid, initially at 14.0oC. After 2.34 kJ of heat are added to the liquid, its final temperature is 56.3oC. What is the specific heat of the liquid
In photosynthesis, plants from glucose (C6H12O6) and oxygen from carbon dioxide and water
gaseous sulfur trioxide can be catalytically decomposed by flowing the gas down a heated tube. the reaction depends on
The label on a bottle of concentrated HCl says the contents are 36% HCl by mass and have a density of 1.179 g/mL. What is the Molarity of the Conc. HCl.
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