If a student performs the following reaction and combines 5 moles of HCl with 3.5 moles of NaOH, what is the limiting reagent? HCl + NaOH → NaCl + H2O NaCl NaOH There is no limiting reagent. HCl

Consider the unbalanced chemical equation. H2O(l)−→−−−−−−−−electrical currentH2(g)+O2(g)H2O(l)→electrical currentH2(g)+O2(g) A chemistry student tries to balance the equation by placing the subscript 2 after the oxygen atom in H2OH2O.   Placing the subscript 2 after H2OH2O would change the _______of molecules, not the ______ of molecules. It results in H2O2, which is ______. To balance chemical reactions, one must add ______, not subscripts.

Equation1:X(s)+NiCl2(aq)→Ni(s)+XCl2(aq)Equation2:X(s)+MgCl2(aq)→noreaction A sample of an unknown solid metal, X(s), is added to a solution of NiCl2(aq), which results in the formation of Ni(s) and XCl2(aq). When a sample of X(s) is added to a solution of MgCl2(aq), no changes are observed. The results of the experiment are summarized in equations 1 and 2. Which of the following represents a possible identity of metal X and provides the correct justification?

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Will the calculated Molarity of NaOH be too high or too low or unaffected if the following happen: When you answer the question, consider how the situation affects the calculation of molarity of NaOH and moles NaOH, which is calculated from the mass of KHP. For each answer, you must supply a clear explanation for your answer. Often times, students will restate the facts rather than explaining why they chose the answer they chose. a) You add the weighed KHP to a flask containing a 60mL of water rather than 50 mL of water. Explain. Your answer must contain a well-thought-out and clearly written explanation. b) The buret is still wet with water on the inside when you add your NaOH solution. Explain c) The KHP is wet when you weigh it. Explain. d) You titrate past the equivalence point by 0.50mL Answer a-d

it is time for the titration.  You measure 15.0 mL of the H2C2O4 solution with a 100-mL graduated cylinder and add it to a 125-mL Erlenmeyer flask.  Then you add two drops of the indicator, phenolphthalein, to the oxalic acid solution in the flask.  You dispense the NaOH solution from the buret into the flask (while swirling the flask) until you reach the endpoint.  At the endpoint, the solution in the flask turns light pink.  You repeat the titration two additional times for a total of three trials.  H2C2O4 (aq) + 2 NaOH (aq) --> Na2C2O4 (aq) + 2 H2O (l)                                                (I)              (II)                (III) Volume of H2C2O4 used  15.00 mL   15.00 mL   15.00 mL Initial Buret Reading        0.00 mL    0.05 mL         0.10 mL Final Buret Reading           14.45 mL     14.38 mL    15.40 mL Volume NaOH used           ________mL          ________mL        ______mL Moles NaOH                     _______M      ________M    _________M…

Predict the possible products for each reaction.  Use the solubility rules to predict the phase of each product. Write the phase for each product. Balance the complete chemical equation. Write the formula equation, complete ionic equation and the net ionic equation ____Fe(NO3) 3 (aq) + ____Na2S (aq) ->

5.00 ml of 7.35 M Fe(NO3)3 is combined with 1.00 mL of 0.50 M HCIO4 and 4.00 ml of 2.00 x 10-2 M KSCN. What is the concentration of Fe3+ in the solution after the other reactants are added? Enter your answer with two decimal places. Example: 1.32 Do not include units in your answer.

A barium hydroxide solution is prepared by dissolving 3.22 g of Ba(OH), in water to make 58.1 mL of solution. What is the concentration of the solution in units of molarity? concentration: The barium hydroxide solution is used to titrate a perchloric acid solution of unknown concentration. Write a balanced chemica equation to represent the reaction between barium hydroxide and perchloric acid. chemical equation: If 18.5 ml of the barium hydroxide solution was needed to neutralize a 8.04 mL aliquot of the perchloric acid solution, what is the concentration of the acid? concentration:

You have plenty of salts that are in front of you and you are trying to figure out which salts are soluble in water, and which ones of their products are soluble in water. For the following equation, identify which reactants and products are soluble/insoluble in water. H2SO4+ Ba(OH)2