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Describe how you would prepare 500 ml of a 0.200 M solution of HCl from a concentrated dolution of 12.0 M HCl
if 82.7874 grams of oxygen was given off during the decomposition, how many grams of KCIO3 were used?
using a solution contains 10 ammonium by mass and hasnbsp density 0.99 gcm-3. determinenbsp hydroxyl and hydrogen ion
A Scientist uses an ultra-high vacuum chamber that has a pressure of 6.5x 10^-12 torr. If the temperature is 298 K, how many molecules are there in 2.0 cm^3? What is the molar volume
Draw the phase diagram of water and put a on the phase diagram to show the pressure and temperature conditions in the day and at night on the moon.
Does (CH3CH2)2C=CHCH2CH3 have any cis/trans isomers and if so what are they? Constitutional isomers? Can you sketch
Vitamin C is essential for prevention of scurvy (and large doses may be effective in preventing colds). Combustion of a 0.2000-g sample of this carbon-hydrogen-oxygen compound yields 0.2998 g CO2 and 0.0819 g H2O. What is the EMPIRICAL FORMULA of ..
Compare the experimental mole ratio of NaHCO3 to NaCl with the theoretical mole ratio. Explain the difference. The experimental mole ratio is 1:1.
Assuming that the calorimeter absorbs only a negligible quantity of heat and that the density of the final solution is 1.0 g/mL, calculate the enthalpy change per mole of BaSO4 formed.
Radiochemical techniques are useful in estimating the solubility product of many compounds. In one experiment, 50.0 mL of a 0.010 M AgNO3
In spectroscopy, the ratio of the intensity of radiation that passes through (I) the sample and the intensity of the radiation (Io) that is directed at the sample being analysed is called
a solution of ammonia and water contains 2.00times1025 water molecules and 5.30times1024 ammonia molecules. how many
According to Boyle's law, for a fixed quantity of gas at a given temperature, what quantity relating pressure and volume is constant
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