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Question- What mass of Na2CO3 is required to produce 250.0 mL of a solution that is 500 ppm in Na+? Assume a solution density of 1.00 g/mL).
I need proficient help to solve the above problem
if 100 ml of 0.100 m nacl is added to 100 ml of .01 m nacl what is the concentration of na ions in the final
find the concentration of calcium ions in a solution made by adding 3.50 g of calcium fluoride to 750. ml of 0.125 m
a chemist started to carry out column chromatography on afriday afternoon reached the point at which the two
suppose you have a 40.3 ml sample of a solution containing a mixture of nitric acid hno3? and hydrochloric acid hcl.
At equilibrium the concentrations are [H2]=5.0 M, [N2]= 8.0M, [NH3]=3.0M. What were the concentrations of nitrogen gas and hydrogen gas that were reacted initially.
Calculate the mass in grams for a sample of Al that absorbs 1.70kJ when the temperature increases from 56 degree Celsius to 177 degree Celsius?
the interferometer mirror of an FTIR spectrometer travels + or - 1.0 cm. Calculate the approximate resolution (cm^-1) for such a spectrometer. At what retardation interval, delta, must the interferogram be sampled to cover the spectral range of 0 ..
Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. How much of the water (in mL) contains 150 mg of Pb. The density of the solution is 1.0 g/mL.
determine the volume of co2 at a temperature twenty two degree celsius and a pressure of 781 mmhgnbsp could be absorbed
calcium carbide cac2 can be made by heating calcium oxide lime with carbon charcoal.? caos 3 cs heat asdagger cac2s
The chemical equation of adding water to the product of heated CuSO4. 5H2O and its reaction classification.
a 25ml sample taken from saturated solution of caoh2 required 36.0ml of 0.100m hcl to titrate. calculate the
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