For each row in the table below, decide whether the pair of elements will form a molecular or ionic compound. If they will, then enter the chemical formula of the compound. If the elements will form more than one compound, enter the compound with the fewest total number of atoms. You may assume all chemical bonds are single bonds, not double or triple bonds. element #1 hydrogen nitrogen hydrogen element #2 compound formed? chemical formula ionic oxygen bromine iodine molecular neither ionic molecular neither ionic molecular neither 0 00 X 5 ? 0 G

Chemical Bonding -.. V Pennsylvania Acces... Department of Hu.. Bvlgari Man In Blac.. O CHEMICAL REACTIONS Identifying the limiting reactant in a drawing of a mixture The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur oxygen chlorine Suppose the following chemical reaction can take place in this mixture: 2C,H,(g)+50,(g) → 4 CO,(g)+2H,O(g) Of which reactant are there the most initial moles? Enter its chemical formula: Of which reactant are there the least initial moles? Enter its chemical formula: Which reactant is the limiting reactant? Enter its chemical formula: Explanation Check

please don't provide handwrittin solution....

How would someone be confident in an experimentally determined concentration? Explain the reasoning using technical terms.

What experimental technique should you use to determine the concentration of a colored solution? O measurements of volume & mass calorimetry O spectrometry O titration a

12.1 g of goztic acid was dissolved in water weighing 87.9 G. The mass fraction (%) of acid in the solution was calculated.

Can the solution be written out and solved step by step?

Please don't provide handwrritten solution .....

[References] Use the References to access important values if needed for this question. In the laboratory you dissolve 15.7 g of cobalt(II) fluoride in a volumetric flask and add water to a total volume of 125. mL. What is the molarity of the solution? M

2) You are tasked with determining the barium content of a sample containing barium nitrate mixed with rubidium nitrate. The sample is weighed, dissolved into 50.0mg water, and treated with xs 0.500M sodium sulfate. The acid fully ionizes in this experiment. A white precipitate forms which is washed, filtered, and weighed multiple times, according to the data given below: Mass of sample 0.425g Mass of thoroughly dried filter paper 1.462g Mass of precipitate+filter after 1st drying 1.755g Mass of precipitate+filter after 2nd drying 1.699g Mass of precipitate+filter after 3rd drying 1.698g