red 3. A student performs a separation by TLC on a silica get plate that results in three spots. A is measured 23 mm away from the original sample spot, a blue spot is 42 mm away, and a yellow spot is 49 mm away. The distance from the original spot to where the solvent stopped is 55 mm. spot a) Calculate the Re value for each component in the mixture. (Show your work and report the correct number of significant figures.) br Tons b) The silica gel plate is polar. Rank the three components in the mixture from lowest to highest polarity. Explain your answer.

10) A pure sample of an oxide of sulfur (S?O?) contains 40% sulfur by mass. The molar mass of the molecular formula of the compound is 160.12 g/mol. Determine the molecular formula of the compound. Show all work.

A chemical analysis yields masses of Zn that are higher by 2 mg compared to the expected value. Calculate the percentage relative error if the true mass of Zn in the sample is 125 mg. O 100.4% O 0.8% 98.4% O 1.6%

What volume (in mL) of 15.921 ppt K+ (39.0983), with a density of 1.01 is needed to provide 8.31 x10-4 g of potassium ion? Show all needed work on your scratch paper.

1. How many grams of Cu+ are present in 2.20 grams of copper(I) chromate? grams Cu+.2. How many grams of copper(I) chromate contain 3.24 grams of Cu+? grams copper(I) chromate.

Pls answer this for me. Thank you so much

The following volumes of 0.000300 M SCN are diluted to 15.00 mL. Determine the concentration of SCN in each sample after dilution. These values will be used during the experiment. To enter exponential values, use the format 1.0e-5. Sample 0.000300 M SCN (mL) [SCN'] (M) 1 1.50 3.50 7.00 4 10.00 3.

Imole 1,5g Cu 504,3 X Imole ('u 5 0415H20 = Moles of anhydride used. (Show calculations) = Cu Soy • 5H20(s) A ('u 504 (5) + 5H20 (9) Hydrate » anhydride Moles of H₂O of hydration (Show calculations)= Ratio of moles of water to moles of anhydride (Show calculations.) = Molarmass = (to correct sig. figs. - do not round yet) Based on your data, what is the empirical formula of your hydrate (round your ratio to the closest whole number)? Use the Argumentation Framework (see inside front cover) (Claim- Evidence- Justification) to justify your answer. 147 S 112 52

Calculate the percent error between your average experimental value and theoretical value for the mass percent of oxygen in KClO3. Show your work clearly.  TV = 39.165% EV = 40.767%

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