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What is the final temperature after 336J of heat energy is removed from 25.0g of Water at 19.6C
Calculate the percent ionization of hydrazoic acid (HN3, Ka = 1.9x10^-5) in solutinos of the following concentrations. A) 0.400 M
The NaOH catalyst solution is prepared by dissolving 0.4 g of NaOH in 4.0 mL of water then adding 3.0 mL of 95% ethanol. how many moles of NaOH, mL of water and ml of ethanol in 3 mL?
Explain which of the following aqueous solutions has the strongest ion-dipole attractions: 0.3 M FeBr3, 0.6 M CaCl2, 0.5 M Ba(NO3)2, 0.2 M (NH4)2SO4, 0.9 M KOH
Identify each of the following substances as ionic, polar covalent, or nonpolar covalent. Also predict its solubility in water. 1. Calcium chloride (CaCl2) 2. Pentane (C5H12) 3.Methyl alcohol (CH3OH)
What volume of 0.250 M Na3PO4 is required to precipitate all the lead(II) ions from 180.0 mL of 0.550 M Pb(NO3)2
Which of the following pairs has about the same atomic radius?
Calculate the pressure in the flask in atmospheres and torr also If the sealed-tube manometer in had a height difference of 20.0 inches between the Hg levels?
What substances are present after the reaction is over? How many grams of ammonia are formed? How many grams of the excess reagent remain after the reaction is complete?
The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq) is completely oxidized by an aqueous solution of BrO3-(aq). Complete and balance the equation for this r..
When 1 mol of HF is added to 1kg of water, the freezing point decreases by 1.9 C, but when 1 mol of HBr is added, the freezing point decreases by 3.7 C. Which is more highly separated into ions, HF or HBr
calculate the theoretical moles of NaOH that should be necessary to reach the equivalence point
Sodium bicarbonate decomposes to form the final solid product sodium oxide. Using a balanced equation, you are to convert the grams of sodium bicarbonate, one number is 5.213, to moles.
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