таyers. layer is on top If molecular iodine (I2) is added to the test tube, predict which plve most of the iodine and justify your answer.

The concentration of arsenic in an insectide is determined gravimetrically by precipitating MgNH4AsSO4 and isolating Mg2As2O7. Determine the %w/w Arsenic in a 1.500-g sample of insectide if it yields 0.1105g of Mg2As2O7. Solve using gravimetric calculation. Show the complete solution in a paper

A. How many gram-moles of C3Hs are contained in 2 kmol of this substance? B. The molecular weight of atomic hydrogen is 1 and that of atomic chlorine (CI) is 35.45. What are (a) the mass fraction in pure HCI? C. What is a Bourdon gauge? D. A liquid has a specific gravity of 0.50. What is its density in g/cm³? is its specific volume in cm/g? E. Which reflects a greater change in temperature, an increase of 1°C or 1ºF? and (b) the mole fraction of chlorine What | What is its density in Ibm/ft'?

sal Media Influencers Dress x Content OWLY2 | Online teaching and le x O Nomenclature of Oxyacid4 B Brany com Ce A cvg.cengagenow.com/ilrn/takeAssignment/takeCXPCompliantActivity.do?locator%=Dassignment-take OPrevious Page 4 of 5 Next O References Use the References to access important values if needed for this question. Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank. If no reaction occurs leave all boxes blank and click on "Submit". Use H,O for hydronium ion. Write a net ionic equation for the reaction that occurs when chromium(II) carbonate (s) and excess nitric acid (aq) are combined.

e teaching and lear X H /ilm/takeAssignment/takeCovalentActivity.do?locator=assignment-take Paraphrasing Tool - QuillBot Al 8 Submit Answer & [Review Topics] [References] Use the References to access important values if needed for this question. How many grams of calcium acetate, Ca(CH3 COO)2, must be dissolved to prepare 250. mL of a 0.223 M aqueous solution of the salt? Q Search U * 8 Retry Entire Group K - C hp KA CJHLUSS Pura LSI dete TUF Ls que X O 8 more group attempts remaining 110 ►ll P PAI Mod 112 [ ✈ + 11 ins + prt sc 1 delete 4 backspace ^O64) O enter home num lock 7 home 4 ✰ ☐ end 3:37 PM 5/21/2023 004 A pg up 1/ 07 * X MEN pg dn 9 pg up COT +

What is the minimum distribution ratio (Dc) if 98% of the solute in a 25.0-mL sample in an aqueous solution is extracted using a single 20.0-mL portion of an organic solvent? O A. 61 О В. 98 О С. 39 O D. 99

i %VA + NI O 1:EV 1.docx > 1. A 15.67 g sample of a hydrate of magnesium carbonate, MGCO, was heated, without decomposing the carbonate, to drive off the water. The mass after heating sufficiently was reduced to 7.58 g. a) Find the percent of water. b) Find the moles of water. c) Find the moles of anhydrous salt. d) Calculate X = the number of water molecules in a hydrate sample (X H2O) and e) what is the formula of the hydrate? 2. A 1.235 g sample of unknown strontium chloride hydrate was found to have 0.511 g of water present. What is the percent of water in the hydrate? II >

.com/ilmn/takeAssignment/takeCovalentActivity.do?locator=assignment-take What is the molarity of the solution prepared by diluting 20.0 mL of 0.492 M Mg(NO3)2 solution to each of the following final volumes? a. 40.0 mL Molarity b. 125 mL Molarity = c. 1.10 L Molarity = d. 375 mL Molarity = D = Submit Answer M M M M Retry Entire Group 1 more group attempt remaining Previous Email Instructor Next Save a

4. If the following values are used... Measure the mass of 0.400 g of cobalt(II) nitrate hexahydrate (Co(NO;)2 -6H2O), and dissolve it in 15.0 mL of distilled or deionized water using a clean beaker. Using a graduated cylinder, measure out 10.0 mL of a prepared 0.10-M sodium phosphate (NazPO4) solution. ... determine which compound, (Na3PO4 or Co(N03)2 ·6H2O) will be the limiting reagent. Then determine the theoretical yield.

You were tasked to separate the components of a mixture containing silica, sodium chloride and charcoal. TNāCI dissolves in water while silica and charcoal are not water-soluble. Only charcoal dissolves in carbon disulfide. a. Write a short experimental procedure to carry out the separation of the mixture. b. Given the following data, determine the percentage of charcoal, sodium chloride and silica. Mass (g) Mass of beaker 100.000 Mass of beaker + mixture 110.000 mass of evaporating dish 62.000 mass of evaporating dish + solid after evaporation of water 65.000 Mass of beaker + charcoal + silica after evaporation of excess water 117.000 mass of beaker + silica after decanting dissolved charcoal and drying 113.545