Homework Answers
The equation is balanced by trying to equate the numebr of atoms of each element on both sides of the equation. We arrive at the equation:
K4Fe(CN)6 + 6
H2SO4 + 6 H2O 
2 K2SO4 + FeSO4 + 3
(NH4)2SO4 + 6 CO
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Tuvumu un Use Algebra to balance equation Ka Fe (CN) + H, SQ,+ 4,0-> K,80,+ Fe...
3. When C12(g) is added to aqueous K4[Fe(CN).), [Fe(CN)]*- is oxidized to [Fe(CN).]>- and K:[Fe(CN)] precipitates,...
3. When C12(g) is added to aqueous K4[Fe(CN).), [Fe(CN)]*- is oxidized to [Fe(CN).]>- and K:[Fe(CN)] precipitates, as shown below. 2K.[Fe(CN),](aq) +Cl2(g) = 2Ks[Fe(CN)2](3) + 2Cl(aq) a. Write the net ionic equation for the reaction and calculate its equilibrium constant. (10 pts) At 25°C [Fe(CN).J” (aq) + € → [Fe(CN).]" (aq) E = 0.356 V Cl2(g) + 2e → 2Cl(aq) E* = 1.360 V Kup of Kj[Fe(CN).] = 106.5 Answer: b. When 80.0 mL of 1.00 M KCN is added to...
Use the following data to calculate the Ka of carbonic acid at 253 K. H2CO3 (aq)...
Use the following data to calculate the Ka of carbonic acid at 253 K. H2CO3 (aq) <==> H+ (aq) + HCO3- (aq) A G° (kJ/mol) -623.2 Substance H2CO3 (aq) HCO3- (aq) H+ (aq) -586.8 0.00 Submit your answer in the following format: 1.23e4, use three sig figs
25 > Write and balance the equation for the complete combustion of acetylene, C,H,. Phase symbols...
25 > Write and balance the equation for the complete combustion of acetylene, C,H,. Phase symbols and energy changes are optional equation: SPECIAL AWD un xox (5) (1) (aq) CLR O O . about us contact us help Careers privacy policy Terms of use MacBook Air
2. a) Balance the equation below and use it to calculate the moles of Fe formed from 0.50 moles of Fe,O3: Fe2O3(...
2. a) Balance the equation below and use it to calculate the moles of Fe formed from \(0.50\) moles of \(\mathrm{Fe}_{2} \mathrm{O}_{3}:\)$$ \mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{~s})+\mathrm{CO}(\mathrm{g}) \stackrel{\Delta}{\rightarrow} \mathrm{Fe}(\mathrm{s})+\mathrm{CO}_{2}(\mathrm{~g}) $$3. Balance the equation below then calculate the mass of \(\mathrm{ZnCl}_{2}\) by obtained by reacting \(10.0 \mathrm{~g}\) of zinc metal with an excess (more than is required) of hydrochloric acid$$ \mathrm{Zn}(\mathrm{s})+\mathrm{HCl}(\mathrm{aq}) \rightarrow \mathrm{ZnCl}_{2}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g}) $$
So equation 15 is [H+]= Ka• [HA]/[A-] Basically, we desire to have a ph of 4.7,...
So equation 15 is [H+]= Ka• [HA]/[A-]
Basically, we desire to have a ph of 4.7, from an acid of 0.1M
and a conjugate base of 0.1M. Ultimately our solution should have a
total volume of 0.01 L, and we have a ka of 3.04x 10^-5. However I
do not know how to find [HA]/ [A-] in the the buffer and how to
find the volume of 0.1 M HA/ volume 0.1 M A- needed on buffer.
Neither volumes are...
uestion 3 of 15 Balance the given chemical equations. Use the Iowest whole-number coefficients. equation 1:...
uestion 3 of 15 Balance the given chemical equations. Use the Iowest whole-number coefficients. equation 1: N2+ O2 NO equation 2: TiCl + H20 TiO2 +HC equation 3: CH + 02 CO2+ H2O equation 4: C2H, + 02 CO2+ H20 equation 5: Fe,O3 + C Fe +CO2 equation 6: Al(NOs)3+ H2SO,Al,(So),+HNO equation 7: C,H,0+02CO2 + H2O
at 298 K. (Use the For each of the following reactions, balance the chemical equation, calculate...
at 298 K. (Use the For each of the following reactions, balance the chemical equation, calculate the emf, and calculate AG smallest possible coefficients for H2000), H(aq), and HO (aq). These may be zero.) (a) In basic solution CH(OH)3(s) is oxidized to cro.2(aq) by Cio (aq). Cr(OH)3(s) + Cio(aq) + OH" (aq) - 0 Cro? (aq) O r(aq) + H2O(!) (b) In acidic solution copper(t) lon is oxidized to copper(IT) Ion by nitrate ion. Cu(aq) + NO3(aq) + (aq) +...
a) Develop a finite difference equation, based on an energy balance for a node on the upper-left corner of a domain, as in the figure below: Too, h Ti Ay k,q Ax Note that both the top and left surfac...
a) Develop a finite difference equation, based on an energy balance for a node on the upper-left corner of a domain, as in the figure below: Too, h Ti Ay k,q Ax Note that both the top and left surfaces are exposed to an ambient temperature of Too and require a convection boundary condition, and that there is constant heat generation per volume (q) throughout the domain. The control volume surrounding the node, on which the energy balance should be...
โ], h Tank 1 4 2 h2 Tank 2 A material balance on this system provides...
โ], h Tank 1 4 2 h2 Tank 2 A material balance on this system provides the coupled system of ordinary differential equations: dhi Ac at 9-91 dh2 Ac dt = 91-92 Let's assume that the tanks have a maximum height of 1 m and are initially empty, so: h20) = (0) = 0 If the flow exiting the tanks is through valves, then the rate is proportional to the square root of the height of water in the tank:...
how do i find H, and how do i use the equation on the 4 question...
how
do i find H, and how do i use the equation on the 4 question to
find Ei and Ef
where m is the mass of the hanging mass, M is the mass of the Smart Cart, h is the height of the hanging mass above the floor, H is the height the Smart Cart (mass M) climbs up the track, and v the velocity of the Smart Cart in the instant when the hanging mass is about to...
3. When C12(g) is added to aqueous K4[Fe(CN).), [Fe(CN)]*- is oxidized to [Fe(CN).]>- and K:[Fe(CN)] precipitates, as shown below. 2K.[Fe(CN),](aq) +Cl2(g) = 2Ks[Fe(CN)2](3) + 2Cl(aq) a. Write the net ionic equation for the reaction and calculate its equilibrium constant. (10 pts) At 25°C [Fe(CN).J” (aq) + € → [Fe(CN).]" (aq) E = 0.356 V Cl2(g) + 2e → 2Cl(aq) E* = 1.360 V Kup of Kj[Fe(CN).] = 106.5 Answer: b. When 80.0 mL of 1.00 M KCN is added to...
Use the following data to calculate the Ka of carbonic acid at 253 K. H2CO3 (aq) <==> H+ (aq) + HCO3- (aq) A G° (kJ/mol) -623.2 Substance H2CO3 (aq) HCO3- (aq) H+ (aq) -586.8 0.00 Submit your answer in the following format: 1.23e4, use three sig figs
25 > Write and balance the equation for the complete combustion of acetylene, C,H,. Phase symbols and energy changes are optional equation: SPECIAL AWD un xox (5) (1) (aq) CLR O O . about us contact us help Careers privacy policy Terms of use MacBook Air
So equation 15 is [H+]= Ka• [HA]/[A-]
Basically, we desire to have a ph of 4.7, from an acid of 0.1M
and a conjugate base of 0.1M. Ultimately our solution should have a
total volume of 0.01 L, and we have a ka of 3.04x 10^-5. However I
do not know how to find [HA]/ [A-] in the the buffer and how to
find the volume of 0.1 M HA/ volume 0.1 M A- needed on buffer.
Neither volumes are...
uestion 3 of 15 Balance the given chemical equations. Use the Iowest whole-number coefficients. equation 1: N2+ O2 NO equation 2: TiCl + H20 TiO2 +HC equation 3: CH + 02 CO2+ H2O equation 4: C2H, + 02 CO2+ H20 equation 5: Fe,O3 + C Fe +CO2 equation 6: Al(NOs)3+ H2SO,Al,(So),+HNO equation 7: C,H,0+02CO2 + H2O
at 298 K. (Use the For each of the following reactions, balance the chemical equation, calculate the emf, and calculate AG smallest possible coefficients for H2000), H(aq), and HO (aq). These may be zero.) (a) In basic solution CH(OH)3(s) is oxidized to cro.2(aq) by Cio (aq). Cr(OH)3(s) + Cio(aq) + OH" (aq) - 0 Cro? (aq) O r(aq) + H2O(!) (b) In acidic solution copper(t) lon is oxidized to copper(IT) Ion by nitrate ion. Cu(aq) + NO3(aq) + (aq) +...
a) Develop a finite difference equation, based on an energy balance for a node on the upper-left corner of a domain, as in the figure below: Too, h Ti Ay k,q Ax Note that both the top and left surfaces are exposed to an ambient temperature of Too and require a convection boundary condition, and that there is constant heat generation per volume (q) throughout the domain. The control volume surrounding the node, on which the energy balance should be...
โ], h Tank 1 4 2 h2 Tank 2 A material balance on this system provides the coupled system of ordinary differential equations: dhi Ac at 9-91 dh2 Ac dt = 91-92 Let's assume that the tanks have a maximum height of 1 m and are initially empty, so: h20) = (0) = 0 If the flow exiting the tanks is through valves, then the rate is proportional to the square root of the height of water in the tank:...
how
do i find H, and how do i use the equation on the 4 question to
find Ei and Ef
where m is the mass of the hanging mass, M is the mass of the Smart Cart, h is the height of the hanging mass above the floor, H is the height the Smart Cart (mass M) climbs up the track, and v the velocity of the Smart Cart in the instant when the hanging mass is about to...
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