![[References] Bunsen burner, if: SAFETY: You should heat with a water bath rather than the reaction mixture is colored. the re](http://img.homeworklib.com/questions/9681f680-97e0-11eb-bb41-dba7aba9b61c.png?x-oss-process=image/resize,w_560)
Homework Answers
A water bath is laboratory equipment made from a container filled with heated water. It is used to incubate samples in water at a constant temperature over a long period of time. Water bath is a preferred heat source for heating flammable chemicals instead of an open flame to prevent ignition. As flammable liquid has high volatility. They can from vapour easily and vapors associated risk of ignition by flashback. Vapors from flammable liquids are denser than air and tend to sink to the floor level where they can spread over a large area. And if open flame is used they ignite. Thus for the safety water bath is used to heat the reaction mixture if that is flammable. Hence option 2 is correct.
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[References] Bunsen burner, if: SAFETY: You should heat with a water bath rather than the reaction...
[References) A 18.0-g sample of ice at -13.6°C is mixed with 105.1 g of water at 80.0°C. Calculate the final temperatur...
[References) A 18.0-g sample of ice at -13.6°C is mixed with 105.1 g of water at 80.0°C. Calculate the final temperature of the mixture, assuming no heat loss to the surroundings. The heat capacities of H2O(8) and H2O(l) are 2.03 J/g.°C and 4.18 J/g.°C, respectively, and the enthalpy of fusion for ice is 6.02 kJ/mol. Temperature = ГС Submit Answer Try Another Version 5 Item attempts remaining
A 3.00-g sample of aluminum pellets (specific heat capacity=0.89 J/°C g) and a 18.50-g sample of...
A 3.00-g sample of aluminum pellets (specific heat capacity=0.89 J/°C g) and a 18.50-g sample of iron pellets (specific heat capacity = 0.45 J/°C-g) are heated to 100.0 °C. The mixture of hot iron and aluminum is then dropped into 77.4 g water at 22.0 °C. Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings. Final temperature = 20.23 °C An error has been detected in your answer. Check for typos. miscalculations...
(References The equilibrium constant (K.) for the reaction PC13 (9) + Cl2 (9) - PCs (9)...
(References The equilibrium constant (K.) for the reaction PC13 (9) + Cl2 (9) - PCs (9) equals 49 at 230°C. If 0.372 mol each of phosphorus trichloride and chlorine are added to a 2.80 L reaction vessel, what is the equilibrium composition of the mixture at 230°C? mol PCL mol Cl2 mol PCL Submit Answer Try Another Version 5 Item attempts remaining
References The equilibrium constant (K.) for the reaction PC1: (9) + Cl2(g) – PC1s (9) equals...
References The equilibrium constant (K.) for the reaction PC1: (9) + Cl2(g) – PC1s (9) equals 49 at 230°C. If 0.702 mol each of phosphorus trichloride and chlorine are added to a 4.50 L reaction vessel, what is the equilibrium composition of the mixture at 230°C? mol PC mol Cl, mol PCLS Submit Answer Try Another Version 6 item attempts remaining
(References) Will the following reactions occur as written? CO2CH2CH3 CH3CH2CHCO,CH.CH Reaction #1: CH2CH3 CHCO H 1....
(References) Will the following reactions occur as written? CO2CH2CH3 CH3CH2CHCO,CH.CH Reaction #1: CH2CH3 CHCO H 1. Na OEt 2. PhBr 3. H90heat Reaction #2: CH3CH2CH2CH2CH.CH 1. Br. 2. Pyridine, heat CH3CH2CH2CH=CHCH CH₂CH₂C yes no Submit Answer Try Another Version 1 item attempt remaining
References] The complete combustion of nonane, COH20 yields carbon dioxide and water: C9H20+ O2 CO2+H2O The...
References] The complete combustion of nonane, COH20 yields carbon dioxide and water: C9H20+ O2 CO2+H2O The smallest whole-number coefficient of oxygen in the balanced equation is A. 14 В. 13 C. 12 D. 16 E. 15 1 item attempt remaining Submit Answer Try Another Version pt pt 1 pt 4Hugo's Way Dashb... etsLive iMar... O Login to Pointe at C... References] Which is a correct balanced chemical equation corresponding to the following description of a chemical reaction? Hydrochloric acid reacts...
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the...
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 11.13 g of CsBr(s) are dissolved in 114.50 g of water, the temperature of the solution drops from 25.61 to 22.35 °C The heat capacity of the calorimeter (sometimes refered to as the calorimeteγ constant) was determined in a separate...
[References) Noting the curved arrows, draw all the product(s), organic and inorganic, of the following reaction....
[References) Noting the curved arrows, draw all the product(s), organic and inorganic, of the following reaction. • You do not have to consider stereochemistry. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom • Separate structures with + signs from the drop-down menu. -O0O- IF ChemDoodle Submit Answer Try Another Version 9 item attempts remaining
In the laboratory you are asked to make a 0.506 m chromium(II) nitrate solution using 315...
In the laboratory you are asked to make a 0.506 m chromium(II) nitrate solution using 315 grams of water. How many grams of chromium(II) nitrate should you add? grams Submit Answer Try Another Version 3 Item attempts remaining ot for this question. Identify the point(s) on the following diagram where the removal of heat will cause some of the sample to freeze. H Temperature E. С Heat Energy Enter your answer in alphabetical order, e.g., DF) not FDJ. Point(s); Submit...
References] Draw structural formulas for the products of the reaction shown below. + HBO • You...
References] Draw structural formulas for the products of the reaction shown below. + HBO • You do not have to consider stereochemistry. • Assume equimolar amounts of the reagents. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right comer • Separate multiple products using the + sign from the drop-down menu. (Reference Give IUPAC names for the following structures. When appropriate, abbreviate ortho (o), meta (m), and para (p), no italics, if...
[References) A 18.0-g sample of ice at -13.6°C is mixed with 105.1 g of water at 80.0°C. Calculate the final temperature of the mixture, assuming no heat loss to the surroundings. The heat capacities of H2O(8) and H2O(l) are 2.03 J/g.°C and 4.18 J/g.°C, respectively, and the enthalpy of fusion for ice is 6.02 kJ/mol. Temperature = ГС Submit Answer Try Another Version 5 Item attempts remaining
A 3.00-g sample of aluminum pellets (specific heat capacity=0.89 J/°C g) and a 18.50-g sample of iron pellets (specific heat capacity = 0.45 J/°C-g) are heated to 100.0 °C. The mixture of hot iron and aluminum is then dropped into 77.4 g water at 22.0 °C. Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings. Final temperature = 20.23 °C An error has been detected in your answer. Check for typos. miscalculations...
(References The equilibrium constant (K.) for the reaction PC13 (9) + Cl2 (9) - PCs (9) equals 49 at 230°C. If 0.372 mol each of phosphorus trichloride and chlorine are added to a 2.80 L reaction vessel, what is the equilibrium composition of the mixture at 230°C? mol PCL mol Cl2 mol PCL Submit Answer Try Another Version 5 Item attempts remaining
References The equilibrium constant (K.) for the reaction PC1: (9) + Cl2(g) – PC1s (9) equals 49 at 230°C. If 0.702 mol each of phosphorus trichloride and chlorine are added to a 4.50 L reaction vessel, what is the equilibrium composition of the mixture at 230°C? mol PC mol Cl, mol PCLS Submit Answer Try Another Version 6 item attempts remaining
(References) Will the following reactions occur as written? CO2CH2CH3 CH3CH2CHCO,CH.CH Reaction #1: CH2CH3 CHCO H 1. Na OEt 2. PhBr 3. H90heat Reaction #2: CH3CH2CH2CH2CH.CH 1. Br. 2. Pyridine, heat CH3CH2CH2CH=CHCH CH₂CH₂C yes no Submit Answer Try Another Version 1 item attempt remaining
References] The complete combustion of nonane, COH20 yields carbon dioxide and water: C9H20+ O2 CO2+H2O The smallest whole-number coefficient of oxygen in the balanced equation is A. 14 В. 13 C. 12 D. 16 E. 15 1 item attempt remaining Submit Answer Try Another Version pt pt 1 pt 4Hugo's Way Dashb... etsLive iMar... O Login to Pointe at C... References] Which is a correct balanced chemical equation corresponding to the following description of a chemical reaction? Hydrochloric acid reacts...
Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of aissolution (dissolving) can be determined using a coffee cup calorimeter. Cardboard or Styrofoam lid In the laboratory a general chemistry student finds that when 11.13 g of CsBr(s) are dissolved in 114.50 g of water, the temperature of the solution drops from 25.61 to 22.35 °C The heat capacity of the calorimeter (sometimes refered to as the calorimeteγ constant) was determined in a separate...
[References) Noting the curved arrows, draw all the product(s), organic and inorganic, of the following reaction. • You do not have to consider stereochemistry. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom • Separate structures with + signs from the drop-down menu. -O0O- IF ChemDoodle Submit Answer Try Another Version 9 item attempts remaining
In the laboratory you are asked to make a 0.506 m chromium(II) nitrate solution using 315 grams of water. How many grams of chromium(II) nitrate should you add? grams Submit Answer Try Another Version 3 Item attempts remaining ot for this question. Identify the point(s) on the following diagram where the removal of heat will cause some of the sample to freeze. H Temperature E. С Heat Energy Enter your answer in alphabetical order, e.g., DF) not FDJ. Point(s); Submit...
References] Draw structural formulas for the products of the reaction shown below. + HBO • You do not have to consider stereochemistry. • Assume equimolar amounts of the reagents. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right comer • Separate multiple products using the + sign from the drop-down menu. (Reference Give IUPAC names for the following structures. When appropriate, abbreviate ortho (o), meta (m), and para (p), no italics, if...
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