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A solution contains barium nitrate and ammonium chloride. Which of the following reagents would separate the two cation by making only one of them precipitate.
a. HCl
b. Hg2(ClO3)2
c. NaClO4
d. Na2SO4
e. KBr
What is the energy released when 0.711 g are converted to energy? Express your answer in joules. For self-consistent units you must use kg because 1 J = 1 kg m2/s2.
A student mixes 99.1g of water at 80.1C with 32.5g of water at 27.3C in an insulated flask. What is the final temperature of the combined water
Compare your answers with the following: the effective charges on H and Cl in the HCl molecule are +0.178 and -0.178. A. HBr has a smaller dipole moment and a longer bond length than HCl
The compound aluminum chloride is widely used to control chemical reactions in industry. It is made by the following reaction: Al2O3(s) + 3C(s) + 3Cl2(g)→ 2AlCl3(s) + 3CO(g)
How many grams of dry NH_4Cl need to be added to 1.60 of a 0.700 solution of ammonia, , to prepare a buffer solution that has a of 8.98. for ammonia is.
Using the balance equation for the combustion of ethanol, anwer the following question C2H6O(l) + 3 O2(g)-----------2CO2 (g) + 3H2O(g) Ethanol
When hafnium metal is heated in an atmosphere of chlorine gas, the product of the reaction is found to contain 62.2 percent Hf by mass and 37.4 percent Cl by mass.
A solution containing 6.3 X a0^-8 M benzene and 2.0 X 10^-7 M cyclohexane gave peal areas of 3950 and 4870, respectively, in a GC experiment.
A 270- flask contains pure helium at a pressure of 755 . A second flask with a volume of 485 contains pure argon at a pressure of 727 torr.
Since there isn't an oxygen or some other electronegative atom in the molecule I'm not sure which peaks are which.
Two substances, A and B, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of substance A is 6.34g and its initial temperature is 21.0?C.
What volume (in liters) of 1.10 M KOH solution should be added to a 0.090 L solution containing 10.2 g of glutamic acid hydrochloride (Glu, FW=183.59
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