What is the total number of kiloJoules required to boil 100. grams of water at 100ºC and 1 atmosphere?

Q: Heliox is a helium-oxygen mixture that may be used in scuba tanks for divers working at great…

A: The total pressure that is exerted by the present gases in the tank will be equivalent to the…

Q: 2.0 L of He at 270 K are warmed up to 350 K. What is the final volume in L?

A: Given: V1=2.0 L V2= ??? T1=270 K T2=350 K

Q: CH4 2.0 H2 NH3 PV RT 1.0 Ideal gas 200 400 600 800 1000 1200 P (atm)

A:

Q: How many calories are released when 58.4 g of steam at 144°C is cooled to -37.6°C?

A: Given: Mass of steam = 58.4 g Initial temperature = 144oC Final temperature = -37.6oC Specific heat…

Q: Water is brought to a boil in a 4.00 L pressure cooker. If the final temperature is 115˚C at 3.2…

A: Given, Volume, V = 4 L             Pressure,P= 3.2 atm        temperature,T= 115°C…

Q: A sample of carbon monoxide gas occupied a volume of 225mL at 347K and 1.00atm pressure. It was…

A: Initial volume of gas = V1 = 225 mL Initial temperature of gas T1 = 347 K Final temperature of gas…

Q: A vessel containing 39.6 cm3 of helium gas at 25 C was inverted and placed in cold liquid ethanol.…

A: According to Charles's law, the volume of the gas increases when the temperature of the gas…

Q: On a humid day in New Orleans, the temperature 22.0°C, and the partial pressure of water vapor in…

A:

Q: A chunk of dry ice, CO2(s), weighing 7.7 g is sealed inside a 2 L soda bottle initially containing 1…

A: Given: mass of CO2 = 7.7 g Temperature = 298.15 K Volume of bottle = 2 L Initial pressure of air =…

Q: If air contains 21% 02, what is the partial pressure of O2 in a cylinder of compressed air at 181…

A: The pressure of the compressed air in the cylinder is = 181 atm The percent of oxygen in the air is…

Q: A balloon is filled to a volume of 7.00 X 10² mL at a tempera- ture of 20.0°C. The balloon is then…

A: Initially the balloon was,      Volume (V1)= 7.00×102 mL      Temperature (T1) = 20°C = 293 K Then…

Q: A 0.75g sample of ethanol is placed in a sealed 400mL container. Is there any liquid present when…

A: The boiling point of ethanol is different at different atmospheric pressure. As atmospheric pressure…

Q: itrogen in a steel tank is under pressure of 15200 kPa at 27oC. What will the new pressure be if the…

A: Gay-Lussac's law will be applied here. According to this law, " At constant volume, the pressure of…

Q: How many grams of steam must react to produce 23.3 g of ferrous ferric oxide (Fe3O4)?

A: First we will write balanced chemical equation. Then solve to find steam needed.

Q: What is the pressure drop (mm Hg) from point (a) to point (b)

A:

Q: What is the density (in g/L) of carbon tetrachloride (CCl4) vapor at 728 mm Hg and 120 °C ?

A: It is given that CCl4 has a vapour pressure of 728 mmHg and is at a temperature of 120°C, The…

Q: An empty 149-mL flask weighs 68.322 g before a sample of volatile liquid is added. The flask is then…

A: Determination of mass of liquid: mass=68.697 g-68.322 g=0.375 g

Q: Twenty-five milliliters of liquid nitrogen (density = 0.807 g/mL) is poured into a cylindrical…

A: Given: Volume of liquid nitrogen = 25 mL Density of liquid nitrogen = 0.807 g/mL Radius of container…

Q: How many atm is 19.4 psi?

A: 1 Psi (pound force per square inch) in atm (atmospheric pressure) is equal to 0.06804596379. To…

Q: How many atm is 22.2 psi?

A: 1psi = 0.068atm therefore,  22.2 psi will be 0.068x 22.2 atm =1.509 or 1.51 atm atm means atmosphere…

Q: A 160.0-L helium tank contains pure helium at a pressure of 1855 psi and a temperature of 298 K. How…

A: Ideal gas equation:                                                            PV=nRTWhere,…

Q: The products of combustion of ethanol C,H,OH are cooled to 15°C at a pressure of 1 bar. Determine…

A: Formula used:  Mole = weight of compound/ Molar mass Combusion reaction of ethanol C2H5OH(l) +…

Q: In a 4.00 L pressure cooker, water is brought to a boil. If the final temperature is 115.0 °C at…

A: Ideal gases are those which follow ideal gas equation at all temperatures and pressures. These gases…

Q: in a 4 L pressure cooker water is brought to a boil if the final temperature is 115 C at 4.3 atm,…

A: The ideal gas equation is PV = nRT. The moles of steam inside pressure cooker is calculated by using…

Q: If the pressure in a flask is 400 mm Hg and the temperature is 40°C, which of the three compounds…

A: Given compounds,       Diethyl ether, ethanol and water Given temperature is 40°C Given pressure is…

Q: The heat of combustion of CH4 is 890.4 kJ/mol and the heat capacity of H2O is 75.2 J/mol×K. Find…

A: heat of combustion of CH4 = 890.4 kJ/mol    heat capacity of H2O = 75.2 J/mol×K.

Q: A fire breaks out and increases the Kelvin temperature of a cylinder of compressed gas by a factor…

A: Ideal Gas Equation: PV = nRT where P= Pressure V= Volume T= Temperature R= Universal Gas Constant

Q: Twenty-five milliliters of liquid nitrogen (density = 0.807 g/mL)is poured into a cylindrical…

A: Given - Density = 0.807 g/mL Radius of cylinder = 10.0 cm Length = 20.0 cm Pressure = 760.0 mmHg…

Q: To what volume will a sample of gad expand if it is heated from 50.0 degrees C and 2.33L to 500.0…

A: Explanation Charles Law The change in the volume of the gas when the temperature of the gas is…

Q: Calculate the root mean square velocities of CH4(g) and N2(g) molecules at 273 K and 564 K.

A: To find: The root mean square velocities of CH4(g) and N2(g) molecules at 273K and 564K

Q: What is the pressure (in atm) exerted by 0.015 moles of gas in a 27L cylinder at 201oC?

A:

Q: The melting point of chloroethane, CH3CH2Cl, is -136°C and its boiling point is 12°C. Is…

A: STP stands for standard temperature and pressure. at STP temperature will be 0°C and pressure will…

Q: in a 6.00 L pressure cooker, water is brought to aboil. if the final temperature is 115 C at 3.25…

A:

Q: A sample of gas at 475.0 5.0 degrees * C is allowed to cool at constant volume until its pressure is…

A: Gay-Lussac’s Law: According to this law, the relation between temperature and pressure of an ideal…

Q: If volume =2.03 L at 24.0 Degrees Celsius then volume = 3.01L at what temperature? ( pressure, n=…

A: NOTE : Assuming the substance we are talking about in this question is a gas as nothing is mentioned…

Q: A rigid vessel containing a 3:1 mol ratio of carbon dioxide andwater vapor is held at 200 °C where…

A: The ideal gas equation is given as- PV= nRT where, P is the pressure of the gas. V is the volume of…

Q: A 35.1 g sample of solid CO2 (dry ice) is added to a containerat a temperature of 100 K with a…

A: It is given that a sample weight 35.1 g of CO2 and is added to a container which has a temperature…

Q: For air at 25 °C (77 °F) with 100% humidity, what is the partial pressure of oxygen (PO2)?

A: Given Air with 100% humidity at 25 °C.

Q: Explain why hot-air balloons float above the ground and why the second story of a two-story home is…

A: The reason for the above two conditions involves the concept of density of gas molecules. Based on…

Q: A sample of ice at -25⁰C is placed into 75 g of water initally at 85⁰C. If the final temperature of…

A: Calculation of Heat Released by Water

Q: A compressed gas cylinder, at 68.5 atm and 19°C, is in a room where a fire occurs. The fire raises…

A: Initial pressure (P1) = 68.5 atm  Final pressure (P2) = P atm  Initial temperature (T1) = 19°C =…

Q: When a 36.4mL of methane (CH4) at 25 degrees celcius is heated its volume increases to 45.2mL.…

A: From charle-s law we know that at constant pressure ,volume V  of a gas is directly proportional to…

Q: The indicating liquid in the manometer shown below if water and the other liquid is benzene. Thr two…

A: The two liquids are water and benzene.  Temperature = 25°C h = 14cm

Q: 1. A balloon is filled to a volume of 7 x 102 ml at a temperature of 20oC. The balloon is then…

A: As pressure and number of mole remain constant.then according to Charles law              V ∝ T…

Q: Calculate the temperature when

A: According to Charles's law the at constant pressure, the volume occupied by the gas is directly…

Q: Silicon tetrachloride (SiCl4) and trichlorosilane (SiHCl3) are both starting materials for the…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.