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There are two samples labeled A and B. Sample A is a physical mixture of GaP and GaAs in a 1:1 mole ratio. Sample B is a GaP0.5 As0.5 solid solution. Are samples A as well as B distinguishable by elemental analysis, X-ray diffraction, absorption spectroscopy or emission spectroscopy? Offer a one sentence explanation for each.
A 50mL portion of a solution containing .2g of BaCl2.2H20 is mixed with 50mL of a solution containing .3g of NaIO3. Assume the solubility of Ba(IO3)2 in water is small.
a balloon originally had volume of 0.439 l at 44 c and a pressureof 729 torr. to what temperature much the balloon be
Organic Oxygen Compounds, What are the possible isomers for Methanol, 1-Propanol, & 1-Pentanol?
Following a high carbohydrate meal, conversion of fructose-6-phospahte to fructose-1,6-bisphosphate will be catalyzed by- phosphofructokinase-2, which is activated when insulin causes dephosphorylation of phosphofructokinase-1
In a thermite reaction, powdered aluminum reacts with iron (III) oxide to make aluminum oxide and molten iron What mass of aluminum oxide is produced when 2.3 grams of aluminum reacts with iron (III) oxide
A 17.5 g mass of ice at 273 K is added to 125 g of H2O(l) at 325 K at constant pressure. Is the final state of the system ice or liquid water. Calculate S for the process. Is the process spontaneous.
Calculate the molality of a solution prepared by dissolving 112. grams of copper (II) sulfate in 450. mL of water at 25 oC
Comparing potassium nitrate (KNO3) and sodium chloride (NaCl), which chemical's solubility (in water) is most affected by change in temperature.
In an acid/base titration, knowing that it took 13.14 mili litres of 0.1016 M sodium hydroxide, NaOH to reach the first endpoint of the titration,) from this information, mols of Phosphoric acid present in the sample is 1.335 mols.
If 488 g SO2 escaped into the atmosphere and all the escaped SO2 were converted to H2SO4. How many grams of H2SO4 would be produced in the atmosphere?
The difference in aqueous nucleophilicity between Cl- and Br- is observed in the product distribution for the Sn2 reaction of 1-butanol (n-butyl alcohol) but not for the Sn1 reaction of 2-methyl-2-propanol
To what volume should you dilute 95mL of a 12.0M H2SO4 solution to obtain 1.80M H2SO4 solution
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