Explain precipitate was collected by filtration and washed

Reference no: EM13504794

The calcium in a 150 mL sample of water from the Ogeechee River at a location near Savannah was determined by precipitating Ca2+ as CaC2O4.H2O (FW=146.115 g/mol). The precipitate was collected by filtration, washed and then ignited [turning the CaC2O4.H2O into CaO (FW=56.079 g/mol)] in a crucible that had an initial mass of 26.4092 g. The mass of the crucible plus CaO was 26.7134 g). What is the concentration of Ca (40.078 g/mol) in the river water in units of part per thousand (ppt) (by mass), assuming the river water has the same density as pure water?

Reference no: EM13504794

Questions Cloud

Which product costing method produces more competitive bid : Determine the amount of overhead that would be allocated to the proposed job if 40,000 direct labor-hours are used as the volume-based cost drive.

Calculate their speeds after the photodisintegration : A photon with a wavelength of 3.70×10?13 m strikes a deuteron, splitting it into a proton and a neutron. calculate their speeds after the photodisintegration

Explain the difference in wiring for the two sets : Two sets of Christmas lights are available. For set A, when one bulb is removed, the remaining bulbs remain illuminated. Explain the difference in wiring for the two sets

What is the lifting force on the roof : in a hurricane, the air (density 1.2kg/m3) is blowing over the roof of a house at a speed of 104km/hr. what is the lifting force on the roof of area 100m2

Explain precipitate was collected by filtration and washed : The precipitate was collected by filtration, washed and then ignited [turning the CaC2O4.H2O into CaO (FW=56.079 g/mol)] in a crucible that had an initial mass of 26.4092 g.

Calculate depreciation at each year : Calculate depreciation at each year end that applies.

Move vicariously and remain spectators : What ordinary people are directly aware of and what they try to do are bounded by the private orbits in which they live; their visions and their powers are limited to close-up scenes of job, family, neighborhood; in other milieux, they move vicarious..

Compute the frequency of the cars vibration : When four people with a combined mass of 290 kg sit down in a car, they find that the car drops 0.50 cm lower on its springs. What is the frequency of the car's vibration

Explain what was the molarity of nabr in the solution : A 50.00-mL solution containing NaBr (FW=102.894g/mol) was treated with excess AgNO3 to precipitate 0.2146 g of AgBr (FW= 187.772g/mol). What was the molarity of NaBr in the solution

User Account

All Pages