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You have a badly tarnished silver teapot. The tarnish is a result of the silver metal reacting with the oxygen in the air according to
4Ag(s)+O2(g)?2Ag2O(s),?H=?62.2kJ/mol
Carefully clean the teapot and then, out of curiosity, you weigh it. The teapot has a mass of 913g . After some more measuring and calculating, you also determine that 5.40% of the silver is on the surface and exposed to the air. If the teapot were once again to become completely tarnished, how much mass ?m is converted to energy?
two naturally occurring isotopes, Re-185 (mass = 184.935 amu) and Re-187 (mass = 186.956 amu). Calculate the percent abundances of the isotopes of rhenium.
one heating 5.03 g of hydrate barium chloride, 4.23 g is left behind. what is the name of this hydrate?
The compound ZnI4 is best described as anions in a face-centered cubic unit cell with the cations in the tetrahedral holes. What is the density of this compound?
What mass of water (in grams) forms from the reaction of 2.49 L of hydrogen gas and 1.92 L of oxygen gas? Both gases are at 738 torr and 27.3 oC
What are some of the differences between water obtained from a river that flows past farmland and water obtained five miles
If 5.50 mol calcium carbide reacts with an excess of water, how many moles of acetylene will be produced.
A 1.80 g sample of a large boimolecule was dissolved in 18.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
which of the following transition metal complexes is diamagnetic?
NaHCO3 + HCl I have provided the products for you here. Can you please try to determine the reactants and then balance the full equation.
When making an alcoholic beverage, such as beer and wine, Brix is a measurement used to assess the amount of sugar present in the fermentation matrix or grape juice.
Give the products you would expect and the mechanism involved for the reaction of 1-bromopropane with:a. Water
Write the complete ionic equation for the reaction that occurs when a few drops of HCl are added to the buffer.
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