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Predict whether a reaction will occur in aqueous solution between the following pairs of substances. If a reaction does occur derive the net ionic equation. Specify the driving force : Precipitate formation (P) Water formation (W) , Weak elctrolyte ( WE) Gas Formation (G), No reaction (NR) make sure that all reactiopn ar balanced (arrow down = precipatiate , arrow up = gas)
1) KNO3+ NaCl--->
2) CaSO3+ HCl ----->
Which atom has the least attraction for the electrons in a bond between that atom and an atom of hydrogen?
Which one of these is liquid bromine, fluorine gas, or oxygen gas?
If it takes 8.5 for the concentration of to decrease from 0.90 to 0.45 , how many hours are required for the concentration to decrease from 0.40 to 0.10
Calculate the number of moles of sodium hydroxide used in the titration. b. How many equivalents of unknown acid were titrated? c. Determine the equivalent mass of the unknown acid
The activation energy for a given reaction is 87 kJ/mol. What is the ratio of the rate constants for this reaction when the temperature is decreased from 37 °C to 15 °C
A 28.0-g sample of water at 290. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Consider the following reaction: CO(g)+H2O(g)in equilibrium with CO2(g)+H2
Calculate rate constant for 1. level reaction where 81% of the matters have already react after 27 seconds.
The amino acids found in proteins are all alpha-amino acids, but not all amino acids are alpha-amino acids. Suppose that a particular amino acid has alpha -, beta-, and gamma isomers. Which of the following will be the strongest acid
How many joules of heat are lost by 3473 kg granite as it cools from 41.1°C to -13.1°C?
Draw a flow chart that illustrates how you would purify an organic compound that is contaminated with inorganic solids that are water soluble
A 100.0 g sample of water at 90.°C is added to a 500.0 g sample of water at 10.°C. Calculate the final temperature of the water.
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