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A piece of turquoise is a blue-green solid; it has a density of 2.65 g/cm3 and a mass of 2.5 g.
(a) Which of these observations are qualitative and which are quantitative?
(b) Which of the observations are extensive and which are intensive?
(c) What is the volume of the piece of turquoise?
What is the change in internal energy (in J) of a system that absorbs 0.588 kJ of heat from its surroundings and has 0.219 kcal of work done on it?
a buffer solution is made as followed i adding 13.50ml of0.200moll sodium hydroxide to 50.00 ml of 0.100m propanoic
Determine the mass of sodium phosphate that yields 1.00 g of calcium phosphate precipitate.
Using the volumes of sodium EDTA solution you just entered and the corresponding calcium carbonate masses entered earlier, calculate the molarity of the sodium EDTA solution for each trial.
What mass of lead sulfate is formed in lead-acid storage battery when 1.10 g of Pb undergoes oxidation?
Phosgene gas has the following: Carbon = 12.1%, Oxygen = 16.2%, and Chlorine = 71.7%. At 22 degrees celsius and 751mm Hg, 1090 mL of the gas weigh 4.42g. Find the molecular formula.
Explain which of the highlighted elements in the figure below fro noxious oxide that is removed from the automobile exhaust as it passes through a catalytic converter
When the brand X cereal sample burned, the temperature rose from 299.0 K to 307.5 K. What is the heat output of each sample. One serving of each cereal is 30.0 g. How would you label the packages of the two cereals to indicate the fuel value per 3..
Calculate molality and mass percent of alcohol in the mixture. A solution of ethanol, C2H5OH, in water has a concentration of 1.996 mol L-1. At 20.0 ºC its density is 0.9677 g mL-1
If the temperature probe in an experiment is not calibrated and the values are 3.5 degrees C higher than they should be, what effect will that have on the delta T values when the initial value is measured with the thermometer and the latter is mea..
According to the following reaction, how many grams of hydrogen gas are necessary to form 0.475 moles nitrogen gas? nitrogen monoxide (g) + hydrogen (g) nitrogen (g) + water (l) 2) According to the following reaction, how many moles of carbon diox..
what is the concentration ratio of the free (and potentially toxic) Pb2+ (aq) in the blood to the much less toxic Pb 2+ - EDTA complex?
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