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Write the chemical equation(s), including state symbols, for what happens when the following ionic compounds are placed in water. Are these substances reacting with water when they are added to water?
KCl
MgBr2
Ca(OH)2
15.0 g of steam at 373 K is added to 250.0 g of H2O (l) at 298 K at constant pressure of 1 bar. Is the final state of the system steam or liquid water? Calculate ?S for the process.
How many mL of a 0.8 M NaOH(aq) solution are required to make 500 mL of a solution with pH=12.50?
The pressure of 3.0 L of an ideal gas in a flexible container is decreased to one-sixth of its original pressure, and its absolute temperature is decreased to one-ninth of the original. What is the final volume of the gas?
You titrate a 425 mL sample of an acide mine drainage with a 0.32 M solution of NaOH. It takes 22.4 mL of the sodium hydroxide to reach the equivalance point
Calculate the standard cell potential at 25 C for the reaction X(s)+2Y+(aq)?X2+(aq)+2Y(s) where ?H? = -651kJ and S = -371J/K.
Fischer projections, isomers, enantiomers and stereocenters, For 2,3-butanediol, there are 3 isomers; 2 are enantiomers, one is not.
What is the theoretical yield of PH3 when 150 grams of Na3P is mixed with 250 grams of H2O? If the actual yield is 30 grams, what is the % yield?
Draw the structure of the product that is formed when methyl propanoate undergoes a reaction with an excess
A solution containing 100g of unknown liquid and 900g water has a freezing point of -3.33C. Given Kf=1.86C/m for water, determine the molecular weight of the unknown liquid and express your answer in g/mol.
Consider the following grayscale electrostatic potential map. the region are labeled as to color. which atom is the most likely to be attacked by a nucleophile choose from the answers provided. (a) 1 (b) 2 (c) 3 (d) 4
two excited triplet states are found 13814 and 15891 cm^-1 above the ground state. calculate the Helmholtz energy for this molecule at room tempreature and 1 atm.
A calibration is performed with a standard solution of iron in water. Aniron solution in methyl ethyl ketone is analysed based on this calibrationfunction. Is it likely to yield an accurate result? or would the result be toohigh or too low? Explai..
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