What symbol should appear in the blank to correctly complete the following equation? ________ + 0-1e ---> 4119K a. 41 20 Ca b. 41 21 Sc c. 41 20 K d. 39 18 Ar e. no correct response
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What symbol should appear in the blank to correctly complete the following equation?
________ + 0-1e ---> 4119K
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- Figure 1:Experimental results Mass of empty weighing dish,g 2.2522g Mass of weighing dish + CaCl2 · 2H2O,g 6.2540g Mass of CaCl2 · 2H2O, g 4.0018g [Na₂CO₃], mol⋅L−1 0.3330 mol⋅L−1 Volume of the CaCl2 solution used, mL 10.00mL Volume of the Na₂CO₃ solution used, mL 10.00mL Mass of the filter paper + watch glass, g 51.3999g Mass of the filter paper + watch glass + dry product (final), g Weight 1=51.7235g Weight 2=51.7058g Figure 2:Calculated data Mass of dry product, g 0.3059g Moles of CaCl2 used, mol 0.02721mol Moles of Na₂CO₃ used, mol 0.02721mol [CaCl2], mol⋅L−1 0.3330 mol⋅L−1 Limiting reagent Calculated mass of excess reagent remaining in the mixture after reaction, g Theoretical yield, g % yield I need help in my lab. The number of mols of cacl2 and na2co3 gives me the same number. If I need to calculate the limiting reagent, how would I be able to do that if they have…What is the concentration of NaOH (sodium hydroxide), in ppm (m/m), in a solution prepared by dissolving 32 mg of NaOH in 5.8 kg of water? Report your result in decimal notation and to the proper number of significant figures. All numbers are measured. a) 0.18 ppmb) 1.8 ppmc) 0.55 ppmd) 5.5 ppme) no correct response8 and 9 pls answer
- . A 20.0g sample of NaCl was dissolved in 125mL of water (density = 1.00g/mL). Calculate the weight percent concentration (w/w) of NaCl in the resulting solution. Remember to calculate the total solution mass! a. 86.2 b. 19.0 c. 16.0 d. 13.8 e. no correct responsePlease help. I don't understand (is it possible to show the steps and formulas...?) thank you! Question: Calculate the percentage error between the slope and the calculated value of P*V. Repeat for each value of P*V(a) During the analysis of water sample by argentometric titration, results obtained are as follows: Experiment1 2 3 4 Volume 15.5, 15.2 ,15.1 ,15.4 A)Calculate average deviation and relative average deviation for the given data. (b)Calculate the molecular weight of an unknown acid if 8.5 g of it is dissolved in 200.0 ml of water and requires 50.0 ml of 1.5 M sodium hydroxide for complete neutralization .
- Pls answer 3,4 & 5 ThankyouTrial #2: A piece of magnesium with a mass of 0.530 grams was placed into a solution of hydrochloric acid. 534 mL of hydrogen gas were produce when this reaction occurred at 23.1 °C and a pressure of 758.4 mmg. Mg(s) + 2HCI(aq) + H2(g) + MgCIz(aq) Calculate the experimentally determined value for the Ideal Gas Constant (L-atm/mol-K) for Trial #2.ANSWER ASAP PLEASE The Ca2+ in a 25.00mL of underground powder was titrated with 28.60 mL of 0.01350 M EDTA. Calculate the concentration of Ca2+ in ppm. Round off your final answer to four significant figures.
- Answer key show work #35i 1.85 moles H2SO4 #35j 0.00836 moles of Ca3(PO4)2 molecules #35k 1.3333 moles H3PO4 (answer corrected 10/9/19) #35l 130.67 g H3PO4 (answer corrected 10/9/19)What is the percent by volume (% v/v) of ethanol in a solution prepared by adding enough water to 75.0 mL of ethanol to make 350.0 mL of ethanol solution? Report your result in decimal notation and to the proper number of significant figures. All numbers are measured. a) 7.50% b) 21.4% c) 75.0% d) 27.3% e) no correct responseSample AnalysisSource of Water sample:Tap Water Molarity of Na2S2O3 1 2 3 0.0243 0.0245 0.0228 Average Molarity of Na2S2O3 0.0239 Trials 1 2 3 Volume of sample used 100.00 100.00 100.00 Final Volume Reading Na2S2O3 (ml) 6.70 10.00 13.10 Initial Volume Reading Na2S2O3 (ml) 3.40 6.70 10.00 Net VolumeNa2S2O3 used (ml) 3.30 3.30 3.10 mg O2 in sample ppm O2 in sample average ppm O2 in sample