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A piece of iron 12 mm by 15 mm has a mass of 3.6 grams. Explain what is the thickness of the piece of iron, in mm given that the density of iron is 7.8 g/cc?Units as well as scientific notation to one digit past decimal.
a sample of the sugar d-ribose c5h10o5 of mass 0.727 g was placed in a calorimeter and then ignited in the presence of
Calculate the H3O+ concentration and the PH for the following: a) a solution with OH- concentration= 4.5*10^-4 M? b) a solution with a pH of 5.6
consider the following unbalanced reaction.p4s f2g pf3gwhat mass of f2 is needed to produce 175 g of pf3 if the
Decide whether or not a reaction will occur when a solution of Cadmium(II) Chloride is treated with nitric acid HNO3(aq). Write a balanced equation for any reaction that occurs.
in a 100 ml sample of a buffer solution the propanic acidconcentration is 0.50 molar and the sodium propanoate
sample of ideal gas be compressed at constant temperature for delta s system to be -3.4j/k
The atomic mass of element X is 29.42 amu. A 33.22 g sample of X combines with 92.10 g of another element, Y to form a compound XY, Calculate the atomic mass of Y.
buffer that has a pH of 9.80 and an osmotic pressure of 1.04atm at 298 K. What masses of HCN and NaCN should you use to prepare the buffer? mHCN, mNaCN =
find the amount of caffeine in milligrams that are isolated per gram of tea leaves. each tea bag contains 2.3 grams of
Chemists know that by adding a very slight excess of silver nitrate to a solution containing chloride ion, it is possible to effectively remove all the chloride ion from the sample as silver chloride.
calculate the molarity of an aqueous naoh solution if 30.10ml of .500m h2so4 is required to reach the end point when
What will be the final temperature of the water in an insulated container as the result of passing 4.00g of steam [H2O(g)] at 100.0 Celsius degrees into 100.0g of water at 25.0 Celsius degrees
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