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Write the complete ionic equation fro the double displacement reaction that occurs when (Aq) soulutions of barium nitrate, Ba(NO3)2, and sodium chromate (NA2CrO4) are mixed) what are the spectator ions and the net ionic equation.
question you have a 5m stock solution of sodium hydroxide. your supervisor tells you to make up 1 liter of a 1m
coal-fired power generationcompared with other fossil fuels flaming coal produces relatively large amounts of
write the amino acid sequence in the N-terminal to C-terminal direction. Use the three-letter amino acid abbreviations (for example, Glu-Asp-Val).
what is its empirical formula. A 0.2000 gram sample of a compound (vitamin C) composed of only C, H, and O is burned completely with excess O2 . 0.2998 g of CO2 and 0.0819 g of H2O are produced. What is the empirical formula?
If you add a solvent called "dioxane" to water, a homogenous mixture forms. Dioxane and water have the same boiling point (100oC). How do you explain that the mixture of the two compounds shows a boiling point that is lower than the one found for ..
what is the concentration ratio of the free (and potentially toxic) Pb^2+(aq) in the blood to the much less toxic Pb^2+ -EDTA complex?
If sample of sodium is dropped into a container of water the reaction is 2Na +2H2O ---> 2NaOH +H2. If 10.4 g of hydrogen are produced, how many g of NaOH are also formed
Iodine-131 is used in medicine to assess thyroid gland function. How many protons and neutrons are present in an iodine-131 atom?
The more water molecules, the more intermolecular forces formed, the more energy released when ions dissolve in water. How does the periodic trend of cation radius for the alkali chloride solids compare to the number of water molecules that can fo..
elemental sulphur occurs in the solid state as 8-membered rings arranged in rhombohedral crystal structure s8 which
Determine molality and the change in temp? If know those can plug them into the same equation: change in temp = iKfm
sappose that 25.0 ml of 0.50 m k2cro4aqreacts with 15.0 ml of agno3aq completly.what mass ofnacl is needed to react
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