Classify each chemical reaction: reaction 2CH₂CH₂CO₂H (1) + 70₂(g) →6CO₂ (g) + 6H₂0(g) CH, (CH₂), CH₂(g) + 80₂(g) → 5CO₂ (g) + 6H₂O(g) Na₂S (aq) + FeCl₂ (aq) → 2NaCl (aq) + FeS (s) Mg1₂ (aq) + Pb(NO3)₂(aq) → Mg (NO3)₂(aq) + PbI₂ (s) 00 type of reaction (check all that apply) combination single replacement double replacement decomposition combination precipitation single replacement combustion double replacement acid-base decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition X precipitation combustion acid-base 000 precipitation combustion acid-base precipitation combustion acid-base

Classify each chemical reaction: HI (aq) + NaOH(aq) 1 reaction Nal (aq) + H₂O(1) Na₂CO3 (s) → Na₂O(s) + CO₂(g) CuSO4 (aq) + Zn CrO (aq) ZnSO4 (aq) + CuCrO4(s) NaCl(aq) + AgNO3(aq) → NaNO, (aq) + AgCl(s) type of reaction (check all that apply) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition X precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base Ś

For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced. CH4(9)+H₂O(g) → CO(g) + 3 H₂(g) Na₂CO3(s) + H₂PO4(aq) → Na₂HPO4(aq) + CO₂(g) + H₂O(1) 2H,S(aq)+O,(g) →2S(s)+2H,O) FeO(s)+CO(g) → Fe(s)+CO₂(g) Explanation reaction Check highlighted atom is being... oxidized O O O O reduced οιοιοιο O X neither oxidized nor reduced MacBook Air O O S © 2023 McGraw Hill LLC. All Rights Reserved. Terms of U=

Sodium hypochlorite, NACIO, is the active ingredient in household bleach The concentration of the hypochlorite ion, CIO, can be determined in two stages. In the first stage, a potassium iodide solution which has been acidified, is added to a solution of the bleach and iodine was formed. ClO (aq)+H(aq) +I(aq) L(aq) + Cl(aq) + H,OD In the second stage, the iodine formed was titrated with sodiumm thiosulphate solution. S,0, (aq) +I,(aq)21(aq) + SO6 (aq) 10.0 cm of a household bleach was diluted to 250cm in a standard flask thereafter 25 cm' of this solution was added to excess acidified potassium iodide solution. The solution was then titrated with 0.10 mol.L Sodium thiosulphate using an appropriate indicator. The volume of thiosulphate solution required to reach the end point of the titration was 20,5cm (a) Calculate the number of moles of Iodine which reacted in the titration (six decimal places only ie., 0.000001) mol (b) Calculate the concentration, in mol L, of Clo in the original…

When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: CH4 (g) + CCI4 (g) →→→ CH₂Cl₂ (g)

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(II) carbonate, in concentrated sulfuric acid. The sulfuric acid reacts with the copper(II) carbonate to produce a blue solution of copper(II) sulfate. Scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: Fe(s) + CuSO (aq) → Cu(s) + FeSO4(aq) ? Suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. He adds powdered iron to a 150. mL copper(II) sulfate sample from the plant until no more copper will precipitate. He then washes, dries, and weighs the precipitate, and finds that it has a mass of 89. mg. 00. Calculate the original concentration of copper(II) sulfate in the sample. Round your answer to 2 significant digits. 0 || 09 Explanation Check x10 X G 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility Ar

Classify each chemical reaction: Reaction Zn(s) + FeSO₂ (aq) → ZnSO₂ (aq) + Fe(s) CuSO₂ (aq) + ZnCrO₂ (aq) → ZnSO₂ (aq) + CuCrO₂ (s) - 2 Na(s) + Cl₂(g) → 2NaCl(s) 2H₂O₂(1)→ 2H₂O() + 0₂ (8) Type ✓ choose one combination decomposition single substitution double displacement none of the above choose one

For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced. reaction H₂S(aq) + 2NaOH(aq) → Na₂S(aq) + 2 H₂O(1) FeO(s)+CO(g) → Fe(s) + CO₂(g) CO(g) + H₂O(g) → CO₂(g) + H₂(g) 2 NH3(aq) + H₂SO4(aq) → (NH4)2SO4(aq) highlighted atom is being... oxidized reduced O O O X neither oxidized nor reduced 5

Classify each chemical reaction: KOH(aq) + HBrO (aq) reaction K BrO (aq) + H₂O (1) Na Cl (aq) + AgNO3(aq) → NaNO3(aq) + Ag Cl (s) 16K (s) + S₂ (s)→ 8K₂S (s) 2CH₂CH₂CO₂H (1) + 70₂(g) → 6CO₂(g) + 6H₂O(g) ✓ 6 ✓ 7 type of reaction (check all that apply) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition ✓8 X precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base 9 10

Pennies that are currently being minted are composed of zinc coated with copper. A student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coating (to expose the underlying zinc). The student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the HCl (the copper remains undissolved): Zn(s) + 2 HCl(aq) --------> H2(g) + ZnCl2(aq)The student collects the hydrogen produced over water at 25°C. The collected gas occupies a volume of 0.899 L at a total pressure of 791 mmHg. Calculate the percent zinc (by mass) in the penny. (Assume that all the Zn in the penny dissolves.)