The average or typical air pressure at sea level is 760 torr. This pressure may vary by ±15 torr depending on the weather. In stormy weather, the pressure drops lower and good weather brings higher pressure. The normal boiling point of water at sea level pressure is 100C From your observation of the boiling point and air pressure what can you conclude?

Q: What is the concentration, in parts per million, of water vapor in a sample of air if the partial…

A:

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: In the Dumas-bulb technique for determining the molarmass of an unknown liquid, you vaporize the…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: Identify all of the intermolecular forces t to a gas. Justify your answers. a. SO2 b. CH;COOH с. Н.S…

A: Solution a. SO2 ; shape  - bent  Due presence of lone pair electrons on S atom, it has non-zero…

Q: b. The density of graphite is 2.26 g/cm³ and that of diamond is 3.51 g/cm³. If the pressure…

A: Le-Chatelier's Principle : Whenever a system at equilibrium is subjected to stress, the system will…

Q: Define the term hydraulic fracturing?

A: The term hydraulic fracturing has to be given,

Q: (a) The compound 1-iodododecane is a nonvolatile liquidwith a density of 1.20 g/mL. The density of…

A: The height of mercury (hHg) is 749 millimetres when the atmospheric pressure is 749 torr. The height…

Q: 4. A student observed that 0.234 grams of a metal produced 92.2 mL of wet hydrogen gas measured with…

A:

Q: A sample of hydrogen is collected by displacing a sample of water with a temperature of 35°C. The…

A: Total pressure = sum of partial pressures of compound present in mixture

Q: A sample of volume 18.3 L has a mass of 57.9 g.(a) Is the material gaseous or condensed?(b) If the…

A: Since we know that gases molecules are spread over the entire vessel therefore it has very less…

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

A:

Q: The energy of the van der Waals bond, which is responsible for a number of the characteristics of…

A: (a) It is given that the van der Waals bond energy for water is 0.50 eV. The expression for…

Q: The root mean square speed of a gas at 250.26 degrees Celsius is 332.50m s^-1. What is the molar…

A: Root mean square speed=3RTM where T is temperature and  M is molar mass of gas.

Q: In a laboratory, oxygen gas was collected by the water displacement method at atmospheric pressure…

A: Given:  Total pressure (PT) = 96.8 kPa  Pressure of water vapour(Pwater) = 2.64 kPa  Temperature =…

Q: Small quantities of hydrogen can be prepared by the addition of hydrochloric acid to zinc. A sample…

A: Total pressure = Pressure of H2 gas + pressure of H2O vapor Therefore, Pressure of H2 gas = Total…

Q: In an experiment as described in the Principles section, 158 mL of O2 is collected over water.  The…

A:

Q: The pressure in a heating duct is measured to be 4.16 in of H₂0. What is this pressure in psi?

A: Given that :  Pressure P = 4.16 in H2 O  We need to find pressure in psi.  For this we will use…

Q: A 1-L sample of CO initially at STP is heated to 546 °C, and its volume is increased to 2 L.(a) What…

A: (a)

Q: A sample of hydrogen (H2) gas was collected over water at 60°C. If the total volume of gas…

A: Given, The volume of the gas is 59.7 mL = 0.0597 L Temperature of gas is 60oC = 60 + 273 = 333K…

Q: A barometer is used to measure the atmospheric pressure. If the barometer reading is 72.98 cm, and…

A:

Q: A steel tank used for fuel delivery is fitted with a safety valve that opens if theinternal pressure…

A: Pressure is defined as the force applied on a body. The force is applied perpendicular on the object…

Q: If a halogen bulb is filled with iodine vapour at a pressure of 5 atm when the temperature is 22c,…

A:

Q: 13.2p. What happens to the mass of air when water vapor is introduced at the same pressure and…

A: the mass of air when water vapor is introduced at the same pressure and volume will be:

Q: A steel tank used for fuel delivery is fitted with a safety valve that opens if the internal…

A: Given data: Pressure limit = 1.00×103 torr. The initial pressure of methane gas P1 = 0.991 atm. The…

Q: The vapor of a volatile liquid just fills the entire space in a flask kept at a temperature of 100oC…

A:

Q: A 5.30 g sample of solid MgSO, 7H,0 was heated such that the water turned to steam and was driven…

A: Given: The pressure, (P) = 1 atm. The temperature (T) = 100 0C = (73.15+100) = 373.15 K. The mass of…

Q: A sample of calcium is allowed to react with excess hydrochloric acid and hydrogen gas is produced…

A: Given reaction is :-  Ca(s) + HCl(l) -----> CaCl2(s) + H2(g)+ water vapour  Given condition at…

Q: What is the root mean square speed (in m/s) of O2if the temperature is 75.5oC

A: We have given that  For Oxygen gas ( O2 )  Temperature = 75.5°C = 348.5K  Molar mass of O2 =…

Q: ) If the mixture in problem 5 consists of 50.0 mol% A and 50.0 mol% B, and substance A is…

A: The question is based on the concept of solutions. we have been given mole percent of both the…

Q: 2. A sample of vapor weighing 0.180 grams occupies a volume of 53.1 cc at 27°C and 760 mmHg…

A:

Q: WHICH ASSUMPTIONS OF THE KINETIC MOLECULAR THEORY FOR GASES ARE MODIFIED TO EXPLAIN THE SHAPE AND…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: ds at a temperature of 673 K and 1073 K is 2 10 x 2, The temperature for forming two voids for eve

A: Ratio as, 673 k & 1073 k is 2×102

Q: The compound 1-iodododecane is a nonvolatile liquid with a density of 1.20g/mL. The density of…

A: This question is solved by using the simple concept of formula of pressure in terms of height and…

Q: In the Dumas-bulb technique for determining the molarmass of an unknown liquid, you vaporize the…

A: Given, V = 354 cm3 P = 742 torr T = 990C m = 1.012 g

Q: Deviations from the ideal gas law are often observed at highpressure and low temperature. Explain…

A: Causes of deviation from the ideal behaviour The real gases obey ideal gas equationPV=nRTonly if the…

Q: The student from question 3 then heated the beaker of water and found that at 75 °C the corrected…

A: Given,Temperature = 750C = 348K.Volume of bubble = 4.05mL = 0.00405L.Moles of air trapped =…

Q: The root mean square speed of H2 molecules at 25 °C is about 1.6 km/s. What is the root mean square…

A: The root mean square velocity of a particle is defined as the square root of the average of the…

Q: if 1.91g of the vapor of a volatile liquid is able to fill a 408-mL flask at 100.4 C and 765 mm Hg,…

A: Given values are: Given mass of the vapor = 1.91 g Volume filled by the vapor = 408 ml = 0.408 L…

Q: A syringe at a temperature of 20 °C is filled with liquid ether in such a way that there is no space…

A: solution -when a liquid is subjected to heat in a closed container and the rate of the condensation…

Q: A scuba diver creates a spherical bubble with a radius of 2.5 cm at a depth of 30.0 m where the…

A: Given: P1=4 atmP2=1 atmRadius = 2.5 cm

Q: Acetylene can be made reacting calcium carbide with water. CaC2 (s)  + 2 H2O (l)  →→ C2H2 (g)   +…

A:

Q: HOW DO INTERMOLECULAR FORCES RELATE WITH THE ASSUMPTIONS OF THE KINETIC MOLECULAR THEORY?

A: Kinetic theory:  The behaviour of gases based is explained on the idea that the gas consists of…

Q: The molar mass of a volatile substance was determined by the Dumas-bulb method described in Exercise…

A: Given,Mass of the gas = 0.846 gPressure 752 torr,Volume = 354 cm3 = 0.354 LTemperature = 100 oC =…

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

A: Given:The mole ratio of carbon dioxide and water vapor is 3;1The total pressure of vessel (Ptotal) =…

Q: .53 In the Dumas-bulb technique for determining the molar mass of an unknown liquid, you vaporize…

A: Given:Volume = 354 cm3 = 0.354 L.Temperature = 99oC = 372 KPressure = 742 torr = 0.97632 atm.Mass =…

Q: If it takes 10.6 hours for 1.00 L of nitrogen, N2, to effuse through the pores in a balloon how long…

A: Given, volume of gas effused of N2 and He gas are 1.0 Ltime required to effused  N2  gas =10.6…

Q: A sample of vapor weighing 0.0905 g filled a 250 mL flask when heated in water bath at 98.0 degrees…

A: From ideal gas law,  PV = nRT For same amount of gas, n = constant  PV/T = nR = constant Therefore,…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.