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Is always a metal. Is called a catalyst. The magnesium acts as a reducing agent. How many electrons does each magnesium atom lose? Which family of elements in the periodic table contains the most powerful oxidizing agents?
Draw the structure of the compound identified by the following simulated 1H and 13C NMR spectra.
An unknown metal with a mass of 28g absorbs 58J of heat. Its temperature rises from 31.1C to 39.9C. Calculate the heat capacity of the metal ?
A solution of 0.2113 g of water dissolves in 25.0 g of a solvent which freezes at 11.5 EC below the freezing point for the pure solvent. What is the Kf value for this solvent?
The sum of the substituent positions do not add up to lowest possible number. -The double bond in the ring does not contain the number one carbon. -Molecule has no cis-trans isomers. -The wrong name for the benzene derivative is used
A sample of propane,C3H8, contains 10.8 moles of carbon atoms. How many total moles of atoms does the sample contain?
Which anion gives precipitate with Ba+2 ion? Iv) Which anion evolves a gas when acid is added? V) Which anion releases an odorous gas as a product?
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 200.0 mL of 0.12 M NH3. The Kb for NH3 is 1.8 x 10-5.
Which of these is likely to be the best conductor of electricity?
Draw a Lewis structure for H3C-NO2. Both oxygen atoms are directly attached to the nitrogen atom. If you take formal charge considerations into account, how many -bonds are in the molecule?
Assuming these values change very little with temperature, over what temperature range is the reaction spontaneous in the forward direction?
A small organic molecule required by an enzyme in order for the enzyme to be a functional catalyst is known as a vitamin. Lipids that are solids at room temperature tend to have more double bonds than liquids at room temperature
Assuming this particle is a single crystal, how many unit cells are lined up across the diameter of the particle? d. Calculate the mass of the particle. e. Approximately how many atoms does this particle contain?
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