A student wants to burn a 1.25 mL sample of ethanol (C2H5OH, d = 0.789 g/mL) in a jar containing dry air. The air in the jar is at standard atmospheric pressure and a temperature of 22 °C. Use this information and the composition of dry air in the previous problem to answer the following questions. a)Write a balanced chemical reaction for the combustion of ethanol. b)Calculate the moles of oxygen needed to completely combust the ethanol. c)Calculate the partial pressure of oxygen in the jar. d)Calculate the volume of oxygen (in L) needed in the jar.

Q: Calculate the heat capacity, in joules per degree, of 28.4 g of water. A) 18.0 J/°C B) 118.7 J/°C c)…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: ive samples of neon gas are described in the table below. Rank the samples in order of increasing…

A: The gaseous behaviour is defined mainly by kinetic theory of gases which assumes the gases consist…

Q: 5. Calculate the heat release when 266 grams of white phosphorus P4 burns in air according to the…

A: Here we have to convert the gram of P4 to mole. And we have to multiply the number of mole of P4…

Q: Suppose 4.00 x 103 m3 of natural gas is used in a year to heat a certain building. Assuming that…

A: Number of moles of methane can be calculated using ideal gas equation:

Q: 3. Heat exchange between water and a reaction: Dry ice is solid carbon dioxide. Instead of melting,…

A: Here heat released from the cooling of water from 85.0 oC to 10.0 oC is used to sublime dry ice.…

Q: 5. The combustion of propane (CsHe) produces 248 kJ of energy per mole of propane burned. How much…

A:

Q: 10. What would be the final temperature if 55.0g of H2O at 30°C is added to 45.0g of H20 at…

A: The amount of energy going out of the warm water is equal to the amount of energy of the cool water.

Q: of the calorimeter is determined by its design in terms of the three mechanisms of heat transfer…

A: Conduction: This mode of heat transfer occurs when solid materials or object are the medium of heat…

Q: Gaseous nitrosyl chloride (NOCl) is injected in a 1.0-L container where it starts decomposing…

A: The given reaction is, 2NOCl (g) → 2NO (g) + Cl2 (g) Given that, Initially, volume of the container…

Q: A student burns a 0.452 g sample of naphthalene, C₁0Hg, in a bomb calorimeter. The combustion…

A: Since the temperature of the calorimeter rises heat is released in the reaction and so the reaction…

Q: Ancient Romans built often out of bricks and mortar. A key ingredient in their mortar was quicklime…

A: Balanced reaction:                It is a chemical reaction, in which the atoms of the reactant side…

Q: Assume that 4.77 × 10° kJ of energy is needed to heat a home. If this energy is derived from the…

A: ΔH for combustion of CH4= -891 kJ/mol.       Amount of heat required =4.77 x 106 kJ ofenergy…

Q: The balanced chemical equation that corresponds to the standard molar enthalpy of formation for…

A: The standard molar enthalpy change of a reaction is the enthalpy change of a reaction at its…

Q: Water has a heat of vaporization (ΔHvap) of 40.8 kJ/mol. What is the change in energy of 10.0 g of…

A: The amount of heat required by water to change from liquid phase to vapor phase by means of…

Q: thermometer- A 58.7 g sample of quartz is put into a calorimeter (see sketch at right) that contains…

A: Given: The mass of the quartz sample taken (m1) = 58.7 g The mass of water taken (m2) = 200.0 g The…

Q: A 50.5 g sample of glass is put into a calorimeter (see sketch at right) that contains 150.0 g of…

A: Answer: This question is based on the conservation of heat. When two objects are brought in contact…

Q: Calculate the moles of lithium from its molar mass and the heat produced when it reacts with water.…

A: In this scenario, we are presented with a multi-step problem that involves the reaction of lithium…

Q: Why does a gas have more potential energy than a liquid? O a O b O Od с Potential energy increases…

A:

Q: 50.0 mL of hot water (49.6 oC) is added to 50.0 mL of cold water (24.7 oC). Upon mixing the water…

A: Given: For hot water Volume, V= 50.0ml So, mass m1= d x V = 1 x 50.0 = 50g Temperature T1= 49.6oC…

Q: HCl + NaOH --> H2O + NaCl how many grams of water were produced if the reaction above took place in…

A: The balanced reaction given is, => NaOH + HCl → NaCl + H2O                    ΔH = -58 KJ/mol =…

Q: 12. Conversions: a. 137°C = B. 93 K = C. 23°C = K °C (Write the equation showing this relationship)…

A: Kelvin = 273.15 + °C

Q: Gaseous nitrosyl chloride (NOCl) is injected in a 1.0-L container where it starts decomposing…

A: Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change…

Q: What is the standard cell potential for the reaction below? Pb(s) + Br2()Pb2+(aq) + 2 Br (aq) The…

A: Loss of electrons is oxidation and gain of electron is reduction. This is a redox reaction.

Q: The specific heat of mercury is 0.140 J/g°C. Calculate the heat necessary to raise the temperature…

A:

Q: What is the amount of heat energy in joules required to raise the temperature of 10.00 g water…

A: The required relation is given below.

Q: Gaseous nitrosyl chloride (NOCl) is injected in a 1.0-L container where it starts decomposing…

A: If more collisions take place then the decomposition rate will also go up. This reaction rate…

Q: How many liters does 42.85 grams of C3H8 occupy at STP?

A:

Q: The reaction shown below represents the formation reaction of water. 2 H2 (g)   +   O2 (g)   →   2…

A: The solution is as follows :

Q: Hydrocarbons are compounds that contain only C and H atoms. When a hydrocarbon reacts with O2, CO2…

A: Hydrocarbons are compounds that contain only carbon and hydrogen atoms.

Q: Coal power plants burn large amounts of coal, C(s), in an O(g) atmosphere to generate electricity.…

A:

Q: If the temperature of a neutral flame (equal proportions of oxygen and acetylene) is 3460 °F, what…

A: Temperature is the degree of hotness or coldness of a substance.Different units are used to measure…

Q: A 52.7 g sample of iron is put into a calorimeter (see sketch at right) that contains 300.0 g of…

A: When sample of iron, which is at higher temperature is put in water, which is at lower temperature ,…

Q: The amount of energy needed to heat 2.00 g of carbon from 50.0oC to 80.0oC is 42.56 J. The specific…

A: Given, mass of Carbon = 2.00 g  Heat energy = 42.56 J  Specific heat capacity  = ?

Q: A 155.0 g piece of copper at 181 oC is dropped into 250.0 g of water at 17.9 oC. (The specific heat…

A: Assuming the final temperature of mixture is T and specific heat of water = 4.184 J/goC Since the…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".