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Problem- What is the density in grams per liter of a gas at STP if 1.36L of the gas in a bulb at 21.4 C, and 726.9 mm Hg weighs 0.363 g?
Rework your solution from the beginning and check each step carefully. I need help for above question.
Question- you are asked to prepare a carbonic acid-sodium hydrogen carbonate buffer solution with a pH of 7.04. 1) What molar ratio of NaHCO3 to H2CO3 should be used. (ka = 4.2x10^-7 for H2CO3)
When 0.100 mol of carbpon is burned in a closed vessel with 8.00 g oxygen, how many grams of carbon dioxide can form. Which ractant is in excess, and how many grams of it remain after the reaction
Determine the theoretical mole ratio of NaCl to NaHCO3.
How do you derive the Schrodinger equation for a right angle isosceles triangle?
Problem- Compute the molar mass of vitamin C if a solution containing 15.4 g in 139 g of water freezes at -1.20°C. (Assume vitamin C does not ionize in water).
for the reaction X(g) + 3Y(g) equilibrium 3Z(g). Kp=2.08x10^-2 at a temperature of 277 degrees Celsius. Calculate the value of Kc
What is the mass of a rectangular piece of copper 24.4cm x 11.4cm x 6.6cm? The density of copper is 8.92 g/cm^3.
Nitrogen is contained in a 300 ml vessel at 400 mm Hg and 10°C. How many grams of nitrogen are in the vessel?
What is the molecular equation, total ionic equation, and net ionic equation for Cu(NO3)2 and NaOH
For each solution, determine the number of moles of HAn and of An- ion at equilibrium. For each solution, caluate the HAn and An- ion molar equilibrium concentrations. Determine the reciprocal of the An- ion concentration for each solution.
write a complete ionic equation and if there is a phase change you need to then write a net ionic equation and list the spectator ions copper (ii) sulfate plus silver nitrate equals copper (ii) nitrate and silver sulfate
in the reaction pbno32 hcl ---- pbcl2swhy does the precipitate disappear when h2o is added? it is pushing the reaction
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