Na2S(aq) + Zn(NO3)2 (aq) → NaNO3(aq) + ZnS(s) Express your answer as a chemical equation. Identify all of the phases in your answer. 0 ΑΣΦ ***** ? A chemical reaction does not occur for this question.

Remaining Time! 02:29:4. Consider the balanced chemical equations shown below. When a 6.00 g sample of a mixture of iron (Fe) and aluminum (Al) is treated with excess HCl(aq), 0.177 moles of H2 are obtained. What is the mass percentage of Fe in the original mixture? Choose the closest answer. Fe(s) + 2 HCI(aq) FeCl2(aq) - + H2(g) 2 Al(s) +6 HC((aq) 2 AICI3(aq) + 3 H2(g) 96 % 69 % 47 % 33 % 17 % Rack Question Menu - O O

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?

A chemist prepares a solution of iron II  chloride    FeCl2    by measuring out  3.0g  of  FeCl2  into a  300.mL  volumetric flask and filling to the mark with distilled water.   Calculate the molarity of Cl−  anions in the chemist's solution.   Be sure your answer is rounded to the correct number of significant digits.

A 335 −mL−mL can of soda pop contains 44 gg of sucrose (C12H22O11C12H22O11).     Part A What is the molarity of the solution with respect to sucrose?         Express your answer using two significant figures.

Complete and balance the following neutralization reactions. HNO3(aq)+Ca(OH)2(aq)→HNO3(aq)+Ca(OH)2(aq)→ Express your answer as a chemical equation. Identify all of the phases in your answer.

You grab a soft drink bottle from your refrigerator. The contents are liquid and remain liquid even when shaken. You now remove the cover, and the liquid solidifies. Provide an explanation for this finding.

Suppose 4.20 g of iron(II) chloride is dissolved in 300. mL of a 75.0 m M aqueous solution of silver nitrate. Calculate the final molarity of chloride anion in the solution. You can assume the volume of the solution doesn't change when the iron (II) chloride is dissolved in it. Be sure your answer has the correct number of significant digits. M x10

A chemist prepares a solution of silver perchlorate (AgC104) by measuring out 1.2 kg of silver perchlorate into a 450. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's silver perchlorate solution. Be sure your answer has the correct number of significant digits. mol/L

For the chemical reaction   HClO4(aq)+NaOH(aq)⟶H2O(l)+NaClO4(aq) write the net ionic equation, including the phases. Which ions are considered spectator ions for this reaction?