Barium

sulfate test the unknown solution, potassium sulfate, and combining it with hydrochloric acid and barium chloride. If a sulfate anion was present in the unknown solution, then the anion would combine with the barium and form the precipitate, BaSO4, and the chlorine ion would combine with the unknown’s cation. In this case a sulfate anion was present in the unknown so the sulfate combined with barium in the form of a precipitate, and the potassium combined with the chloride ion as an aqueous…

favours the products and results in a purple colored solution. 6. Cr2O7 2+ (aq) +2OH- (aq) ⇌ 2CrO4 2- (aq) + H2O (l) 7. n 8. Barium dichromate appeared as a fairly clear/orange solution, while the barium chromate was a milky orange colour due to the presence of precipitates. The solubility of barium dichromate was more soluble since the solution was still visible relative to barium chromate in which the solution was cloudy and non-transparent. 9. No precipitation was formed in K2Cr2O7 because…

the metals were. Continuing, we also noticed that part A and B differed in terms of what the unknown metals turned out to be for each one. Part A's unknown metal eventually was found to be beryllium, while part B's unknown metal was determined to be Barium. In closing, after following the steps and performing the calculations using the formulas we were able to determine that the two unknown metals were Beryllium and…

junction, the slow emptying of barium and absence of peristalsis are characteristics of achalasia (Allaix, et al, 2016). The barium swallow defines the shape of the oesophagus and lower oesophageal sphincter (LES) and may also show increased peristalsis and spasm trying to overcome the LES that does not relax. This condition is called vigorous achalasia (Fisichella, Raz, Palazzo, Niponmick, Patti, 2008). Oliveira, et al (1997) reported that in some cases, the barium oesophagram may not present…

Reaction # Observations Equation 1 We mixed Aluminum Sulfate with Barium Nitrate in two test tubes. The Barium Nitrate is a clear liquid that had no smell. The Aluminum Sulfate also was a clear liquid with no scent. When mixed, the center of the liquid turned into a milky white precipitate. After 2 minutes the white substance sank to the bottom while the clear liquid sat on top. Al2(SO4)3(aq)+3Ba(NO3)2(aq)--> 2Al(NO3)3(aq)+3BaSO4 (s) 2 First we felt the material of a piece of Magnesium.…

has atomic number of 38. It is an alkaline earth metal, and is a soft white yellowish metallic element which has highly reactivity chemically. It’s properties are mostly intermediate between aand similar to those of its group neighbors calcium and barium. When it is exposed to air, the metal forms a dark oxide layer. Strontium has 38 protons, 50 neutrons, and 38 electrons. The electron configuration of Strontium is 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(10) 4s^(2) 4p^(6) 5s^(2) or [Kr] 5s^(2).…

REASON CHIEF COMPLAINT: Modified barium swallow study. S Barium swallow study completed 11/15/2017. O Applesauce: Mild residue in the vallecula sinus. Compensatory strategies: Alternating with thin liquids to clear the residue, although it was helpful, he aspirated the thin liquids. Pudding: Moderate residue in the vallecula sinus. There is also mild to moderate residue in the pharyngeal vestibule between the vallecula sinus and piriform sinus secondary to decrease pharyngeal…

identified as zinc carbonate due to evolution of CO2 on addition of sulphuric acid. Among the soluble solids, two (1 and 12) formed precipitates in sulphuric acid. One was expected to be Barium chloride and to react with silver nitrate. Hence, (14) and (13) were reacted with 1 and 12. This led to the identification of 1 as barium chloride and 13 as silver…

ACHALASIA Achalasia refers to a rare disease of the muscle of the lower esophageal body and the lower esophageal sphincter (LES) that prevents relaxation of the sphincter and inability of the muscles to contract, or absence of peristalsis, of the esophagus. LES pressure and relaxation are regulated by excitatory and inhibitory neurotransmitters however, patients with achalasia lack these nonadrenergic, noncholinergic inhibitory ganglion cells thus, causing imbalance between the excitatory and…

When hydrochloric acid was added to the unknown and known solutions, both resulted in no reaction. This also occurred when potassium hydroxide was added to both of the solutions. Barium chloride was then added to the two solutions, which resulted in a cloudy white precipitate from both of the solutions. A cloudy white precipitate also formed when calcium nitrate and ammonium nitrate were added to both the unknown and known solutions…