If 7.5 g of KBr were dissolved in 100. g of water, how much heat (kJ) was involved? (2 Significant Figures) kJ J (q = msolution*C*AT where the heat capacity of the solution is 4.18

If 4.88 moles of F_{2} are reacted with 10.04 moles of Ti how many moles of Ti * F_{4} will result? Ti+2F 2 TiF 4

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Because the limiting reactant in this case will be SCN- (from KSCN), the moles of SCN- in solution will determine the moles (and concentration) of FeSCN²+ in each standard solution. Concentrations and volumes are provided in the experiment procedure in Table 4.1. Use the concentration of KSCN, volume of KSCN and total final volume of each solution (each standard solution will be 20.00 mL) to calculate the FeSCN²+ concentration in each of the four standard solutions. 1 Fe³+ (aq) iron (III) 1. FeSCN²+ concentration in Standard Solution 1 = 234 + 4 SCN- (aq) thiocyanate TABLE 4.1. Volumes for the Part A standard solutions for the Beer's Law Plot. Solution Volume of FeSCN²+ (aq) thiocyanoiron (III) 5.00 5.00 5.00 5.00 Volume of 0.200 M Fe(NO3)3 (ml) 0.00200 M KSCN (mL) 2.00 1.50 1.00 0.50 Reaction 1 Volume of Deionized Water (mL) 13.00 13.50 14.00 14.50 Continued on next page...

Balance the reaction between Fe and HNO3 to form Fe2+ and NO in acidic solution. When you have balanced the equation using the smallest integers possible, enter the coefficients of the species shown. Fe + HNO3 Fe2+ + NO (reactant, (Enter 0 for neither.) Water appears in the balanced equation as a product, neither) with a coefficient of How many electrons are transferred in this reaction?

I need the equation for Ni2+(aq) plus sodium hydroxide and dimethylglyoxime

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A researcher wants to make a buffer using potassium dihydrogen phosphate. What mass of potassium dihydrogen phosphate in grams would the researcher need to make 1.0 liter of buffer with a concentration of 20. mM solution?

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For each reaction in the table below, write the chemical formulae of any reactants that will be oxidized in the second column of the table. Write the chemical formulae of any reactants that will be reduced in the third column. reaction JC1, () +2A1() SC(s) +S() 1₂(0)+ Ma(0) ZAICI, () Cas() Mal₂ (0) reactants oxidized 0 0 0 reactants reduced 0 0 0 X