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1.A solution may contain some of the soluble ions from group 1 but it does contain other cation or interferringsubstances. when 12 drops of 6 M Hydrochloric is added, no precipitate.
B. To a solution that is known to contain come of the soluble ions from group 1 and no other cations or inteferring substances, 12 drops of 6M hydrochloric acid is added and no precipoiate forms.To clear solution is evaporated to half its volume and 12 more drops of 6M hydrochloric acid is added followed by the addition of water until the solution's volume is 2mL. To this solution 1mLn of thioacetamide solution added and when the test tubeis heated, a dark brown precipitate forms?
A) wHAT CATION(S) ARE DEFINITELY IN THE UNKNOWN SOLUTION?
B) WHAT CATION(S) ARE DEFINITELY NOT IN THE UNKNOWN SOLUTION?
C) wHAT CATION(S) MAY BE IN THE UNKNOWN SOLUTION?
calculate how many protons are required to pass through the xeno-FoF1-ATP synthase complex to synthesize one ATP
The procedure (paragraphs 2 and 3) states that the additions of bromobenzene, methyl benzoate and hydrochloric acid must be done slowly.
What are the molar flow rates of acetylene, carbon monoxide and hydrogen in the react or effluent? e) What is the average molecular weight of the reactor effluent?
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
When a clear aqueous solution of calcium chloride (CaCl2) is mixed with a clear aqueous solution of sodium carbonate (Na2CO3), a white solid precipitate forms.
If 114 grams of CS2 are burned in an excess of O2 (an amount sufficient to burn completely all 114 g of CS2), how many moles of SO2 are formed?
A 309 mL sample of unknown HCl solution reacts completely with Na_2CO_3 to form 10.1 g CO_2. What was the concentration of the HCl solution?
The object ofthis problem is to determine V40, the required volume ofthe 40% mixture. Calculate V40 and do a degree-of-freedom analysis.
An 18-karat gold necklace is 75% gold by mass, 16% silver, and 9.0% copper. How many grams of copper are in the necklace? If 18-karat gold has a density of 15.5
Number of exhaled molecules, Total mass of the atmosphere is equivalent to that in a layer 7 kilometer deep with density equal to the density at the surface
Could you separate it from benzoic acid using extraction procedures? If so, please detail and explain how this can be done.
What is the molarity of a HCl solution that contains 6.13 g of HCl in 352 mL of solution?
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