Chemistry 1025 Lab Final (A+ Guaranteed)
What two criteria must be met for a compound or a solution to be an electrolyte?
Choose matching definition
1) the compound or solution must contain ions not just neutral molecules
2) those ions must be free to move
1)Orthophosphates are the inorganic...
What two criteria must be met for a compound or a solution to be an electrolyte?
Choose matching definition
1) the compound or solution must contain ions not just neutral molecules
2) those ions must be free to move
1)Orthophosphates are the inorganic forms of phosphate, such as PO4, HPO4, H2PO4.Found in
fertilizers.
2) Organically bound phosphate- found in human or animal waste and decaying matter.
3) Condensed phosphates-added to water supplies and industrial processes to prevent scaling and
corrosion. was commonly found in detergent.
Nitrate ions convert hemoglobin to a form that can no longer transport oxygen in the baby's
blood. High nitrate levels (above 10 mg/L) in drinking water provided to babies can cause it.
1. select the axes. 2)Set the scales for the axes (they do not have to be the same. 3)Plot the data.
4) Draw a curve for the best fit or straight line if that's appropriate. 5) Title your graph.
Sodium nitrate
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NaNO3
CuNO3
Cuso₄
H2SO4
In regards to significant figures, in multiplication and division, the final answer is written so it
has the same number of digits as the measurement with the fewest significant figures
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670 /5.3 = 126.41 (126)
heat per gram of fuel = heat absorbed (cal) / weight of fuel burnt.
animal feedlots, agricultural run-off, treated municipal water being returned to streams, urban
runoff
Example:
24.65 x 0.67 = 16.5155 17
four SF two SF calculator display final answer rounded to two SF
, 20.0 (g) H2O x (1) x { 55.5 - 22.0 } = 670
heat absorbed (cal) = mass of water (g) x temp change
Calculate the total amount of heat (in cal) absorbed by 20.0 g of water heated as described in the
experimental procedure above. The initial temperature of the water was 22.0oC, and the final
temperature after heating was 55.5oC.
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20.0 (g) H2O x (1) x { 55.5 - 22.0 } = 670
heat absorbed (cal) = mass of water (g) x temp change
1) the compound or solution must contain ions not just neutral molecules
2) those ions must be free to move
animal feedlots, agricultural run-off, treated municipal water being returned to streams, urban
runoff
670 /5.3 = 126.41 (126)
heat per gram of fuel = heat absorbed (cal) / weight of fuel burnt.
give an example of a pure (or exact) number
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less than 1 mg/L
dozen eggs
1 yard equals 3 feet
Carbon dioxide making carbonic acid
Reported as total phosphate concentration.
What process converts the nitrogen-containing ion in part a) into the nitrogen-containing ion in
part b)?
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Carbon dioxide making carbonic acid
nitrate ion
concentration of dissolved solute equals its solubility
nitrification or nitrogen fixation
cupric nitrate
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A compound that consists of positive and negative ions, such as sodium chloride
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