HI(aq)+Sr(OH)2(aq)→ Express as a chemical equation.

A chemist needs to create a series of standard Cu2+(aq)Cu2+(aq) solutions for an absorbance experiment. For the first standard, he uses a pipet to transfer 20.0020.00 mL of a 2.952.95 M Cu2+(aq)Cu2+(aq) stock solution to a 500.0500.0 mL volumetric flask, and he adds enough water to dilute to the mark. He then uses a second pipet to transfer 20.0020.00 mL of the second solution to a 50.0050.00 mL volumetric flask, and he adds enough water to dilute to the mark. Calculate the concentration of the Cu2+(aq)Cu2+(aq) solution in the 50.0050.00 mL volumetric flask.

Copper (II) chloride, CuCl2(aq) solution is reacted with aluminum hydroxide, Al(OH)3(aq) solution. List the spectator ions in this reaction

How many millilitres of 0.590 mol L−1 H2SO4(aq) are required to completely neutralize 28.1 mL of 0.570 mol L−1 KOH(aq) ? Hint: Write a balanced chemical equation for the reaction.   Give your answer in mL, accurate to three significant figures

4) Write a chemical equation describing the dissolution of Ba(NO3)2 in water. To give you an example of what I'm looking for, for NaBr, the equation would be NaBr(s) → Na*(aq) + Br- (aq). 5) Based on your equation from question 4, if 41.9 g of Ba(NO3)2 are dissolved in water to produce a total solution volume of 495 mL, determine the molarity of NO3- in the solution?

To measure the amount of iron in a certain type of iron ore, an analytical chemist dissolves a 41.0 g sample in strong acid and titrates it to the endpoint with 38.3 mL of 0.4700M potassium permanganate (KMnO4) solution. The balanced chemical equation for the reaction is: 3+ 2+ 8H (aq) + 5Fe²+ (aq) + MnO4(aq) → 5Fe³+ (aq) + Mn²+ (aq) + 4H₂O(1) What kind of reaction is this? If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. Calculate the mass percent of Fe in the sample. Be sure your answer has the correct number of significant digits. precipitation acid-base O redox 0 0 0 % X Ś x10

Predicting the reactants of a neutralization reaction Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Be sure the equation you submit is balanced. (You can edit both sides of the equation to balance it, if you need to.) Note: you are writing the molecular, and not the net ionic equation. → KBr(aq) + H₂O(1) × ロ→ロ Ś ? olo 18 Ar AR OF efloor

On their third titration trial, the CHM 111 student used 18.80 mL of 0.205 M NaOH(aq) to neutralize 25.0 mL of HCl(aq). Calculate the molar concentration of the HCl solution to the correct number of significant figures.

Balance the following chemical equation  Mg(OH)2(s) + HCl(aq) - H2O(l) + MgCl2(aq)

A chemist prepares a solution of potassium bromide    KBr    by measuring out  0.17g  of  KBr  into a  300.mL  volumetric flask and filling to the mark with distilled water.   Calculate the molarity of  Br−  anions in the chemist's solution.   Be sure your answer is rounded to  2  significant digits.