Which of the metals, cadmium (Cd), mercury (Hg), and strontium (Sr), can be used to produce...
Homework Answers
Option (a)
All of the metals Cd, Hg, and Sr produces H2 gas on reacting with acid such as HCl(aq). For example,
Cd + 2 HCl ----> CdCl2 + H2
Add Answer to:
Which of the metals, cadmium (Cd), mercury (Hg), and strontium
(Sr), can be used to produce...
Imported ceramic bowls are analyzed for toxic heavy metals such as cadmium since these metals can...
Imported ceramic bowls are analyzed for toxic heavy metals such as cadmium since these metals can be leached from the ceramic by the food in contact with it. The amount of cadmium that can be leached from the bowl is determined by adding an acetic acid solution to the bowl for a 24 hour period, after which the cadmium concentration in the acidic leaching solution is determined. In one experiment, the cadmium concentration in an acidic leaching solution was analyzed...
When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved. Calculate...
When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved. Calculate the volumeſin L) of H2(g) at 35.2°C and 646 torr that can be formed when 325 ml of 0.855 M HCl solution reacts with excess Mg to give hydrogen gas and aqueous magnesium chloride Mg(s) + HCl(aq) --MgCl2(aq) + H2(g) (unbalanced) Write answer to three significant figures. Numeric Response
Using the table below: 19. Three combinations of metals are listed below, which combination would produce...
Using the table below:
19. Three combinations of metals are listed below, which
combination would produce the largest voltage if they were used to
construct an electrochemical cell?
Copper (Cu) with zinc (Zn)
Lead (Pb) with zinc (Zn)
Lead (Pb) with cadmium (Cd)
Liu lur the reaction between Zn and Cu2+ ions is 1.1030 V, we can use the known value for the half-cell potential for zinc to determine the half-cell potential for copper: Zn(s) → Zn2+(aq) + 2e +...
1. Which four lamps can you observe using a spectroscope? A. strontium B. sodium C. lithium...
1. Which four lamps can you observe using a spectroscope? A. strontium B. sodium C. lithium D. fluorescent E. tungsten F. mercury G. barium 2. Which four metals are you able to observe the emission colours using flame excitation? A. tungsten B. fluorescent C. strontium D. sodium E. barium F. mercury G. lithium
#3 cannot use Cd(NH3)42+ or any cadmium salt CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq)...
#3 cannot use Cd(NH3)42+ or any
cadmium salt
CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq) Note: C2o2(aq) is the oxalate ion 1. If solid CdC204(s) is added, the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. produce some of the solid. 2. If NH3(aq) is added the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. cause some solid to...
Using the information in the table: Which combination of metals, if used to create an electrochemical...
Using the information in the table:
Which combination of metals, if used to create an
electrochemical cell, would produce the largest voltage?
Liu lur the reaction between Zn and Cu2+ ions is 1.1030 V, we can use the known value for the half-cell potential for zinc to determine the half-cell potential for copper: Zn(s) → Zn2+(aq) + 2e + Cu2+(aq) + 2e → Cu(s) Zn(s) + Cu2+ (aq) → Zn2+ (aq) + Cu(s) E half-cell = 0.7628 V Eºhalf-cell =...
Which group of elements includes the most reactive of all the metallic elements? alkali metals alkaline...
Which group of elements includes the most reactive of all the metallic elements? alkali metals alkaline earth metals coinage metals (Group 1B) transition metals Group 2B metals Determine all of the covalent hydrides from the compounds listed below. CaH2 H2S SiH4 I only II only I and II I and III II and III Based on the following options, select the substance with hydrogen in the +1 oxidation state. KH CH4 H2 AlH3 SrH2 Which of these substances is being...
What is the percent yield of water if we start with 5 g C, Hg and...
What is the percent yield of water if we start with 5 g C, Hg and produce 6.13 g H,O? The end point in a titration of a 58 mL sample of aqueous HCl was reached by the addition of 25 mL of 0.83 M NaOH titrant. The reaction proceeds by the following equation. C3H8 +502 — 3CO2 + 4H20 Select the correct answer below: HCl(aq) + NaOH(aq) + NaCl(aq) + H2O(1) 0 63.905 What is the molar concentration of...
Which of the following metals could really be used as sacrificial anodes for iron (Fe2+(aq) +...
Which of the following metals could really be used as sacrificial anodes for iron (Fe2+(aq) + 2e??Fe(s), E0 =-0.44V )? A) Tin F) Magnesium B) Zinc G) Lithium C) Aluminum H) Copper D) Lead I) Nickel E) Sodium J) None of the above Enter all that apply in alphabetical order (e.g. AB, ABDF, etc.)
i only need g, h and I please Classifying Chemical Reactions continued Classifying Chemical Reactions continued...
i
only need g, h and I please
Classifying Chemical Reactions continued Classifying Chemical Reactions continued 3. Write a balanced chemical equation for each reaction and classify the reaction. a. Copper metal heated with oxygen gives solid copper(II)oxide. 4 cu +02 → 2420 (5) combination reachon b. Mixing ammonium nitrate and sodium hydroxide solutions gives aqueous sodium nitrate, ammonia gas, and water. NHL NO2+ NaOH -> Na NO₃(aq) + NH₃ (9)+H₂O (e) double replacement c. Mercury(II) nitrate solution reacts with...
Imported ceramic bowls are analyzed for toxic heavy metals such as cadmium since these metals can be leached from the ceramic by the food in contact with it. The amount of cadmium that can be leached from the bowl is determined by adding an acetic acid solution to the bowl for a 24 hour period, after which the cadmium concentration in the acidic leaching solution is determined. In one experiment, the cadmium concentration in an acidic leaching solution was analyzed...
When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved. Calculate the volumeſin L) of H2(g) at 35.2°C and 646 torr that can be formed when 325 ml of 0.855 M HCl solution reacts with excess Mg to give hydrogen gas and aqueous magnesium chloride Mg(s) + HCl(aq) --MgCl2(aq) + H2(g) (unbalanced) Write answer to three significant figures. Numeric Response
Using the table below:
19. Three combinations of metals are listed below, which
combination would produce the largest voltage if they were used to
construct an electrochemical cell?
Copper (Cu) with zinc (Zn)
Lead (Pb) with zinc (Zn)
Lead (Pb) with cadmium (Cd)
Liu lur the reaction between Zn and Cu2+ ions is 1.1030 V, we can use the known value for the half-cell potential for zinc to determine the half-cell potential for copper: Zn(s) → Zn2+(aq) + 2e +...
#3 cannot use Cd(NH3)42+ or any
cadmium salt
CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq) Note: C2o2(aq) is the oxalate ion 1. If solid CdC204(s) is added, the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. produce some of the solid. 2. If NH3(aq) is added the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. cause some solid to...
Using the information in the table:
Which combination of metals, if used to create an
electrochemical cell, would produce the largest voltage?
Liu lur the reaction between Zn and Cu2+ ions is 1.1030 V, we can use the known value for the half-cell potential for zinc to determine the half-cell potential for copper: Zn(s) → Zn2+(aq) + 2e + Cu2+(aq) + 2e → Cu(s) Zn(s) + Cu2+ (aq) → Zn2+ (aq) + Cu(s) E half-cell = 0.7628 V Eºhalf-cell =...
What is the percent yield of water if we start with 5 g C, Hg and produce 6.13 g H,O? The end point in a titration of a 58 mL sample of aqueous HCl was reached by the addition of 25 mL of 0.83 M NaOH titrant. The reaction proceeds by the following equation. C3H8 +502 — 3CO2 + 4H20 Select the correct answer below: HCl(aq) + NaOH(aq) + NaCl(aq) + H2O(1) 0 63.905 What is the molar concentration of...
i
only need g, h and I please
Classifying Chemical Reactions continued Classifying Chemical Reactions continued 3. Write a balanced chemical equation for each reaction and classify the reaction. a. Copper metal heated with oxygen gives solid copper(II)oxide. 4 cu +02 → 2420 (5) combination reachon b. Mixing ammonium nitrate and sodium hydroxide solutions gives aqueous sodium nitrate, ammonia gas, and water. NHL NO2+ NaOH -> Na NO₃(aq) + NH₃ (9)+H₂O (e) double replacement c. Mercury(II) nitrate solution reacts with...
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