Of the following, _____ is a correct statement of Avogadro\'s law. P x n = const

Question

Of the following, _____ is a correct statement of Avogadro's law. P x n = constant P / V = constant V / T = constant V / n = constant n / P = constant A chemical reaction that absorbs heat from the surroundings is said to be _____ and has a _____ Delta H at constant pressure. endothermic, positive endothermic, negative exothermic, negative exothermic, positive exothermic, neutral A real gas will behave most like an ideal gas under conditions of _____. high temperature and high pressure high temperature and low pressure low temperature and high pressure low temperature and low pressure STP A sample of gas initially at 4.00 atm was compressed from 8.00 L to 2.00 L at constant temperature. After the compression, the gas pressure was _____ atm. 4.00 2.00 1.00 8.00 16.0 The molecular weight of a gas that has a density of 5.75 g/L at STP is _____ g/mol. 3.90 129 141 578 In a gas mixture of He, Ne and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is _____ if the partial pressures of He and Ne are 1.50 and 2.00 atm, respectively. 0.179 0.238 0.357 0.583 0.417 Gaseous mixtures _____. can only contain molecules are all heterogeneous can only contain isolated atoms are all homogeneous must contain both isolated atoms and molecules The value of Delta E for a system that performs 213 kJ of work on its surroundings and loses 79 kJ of heat is _____ kJ. +292 -292 +134 -134 -213 A tank containing both HF and HBr gases developed a leak. The ratio of the rate of effusion of HF to the rate of effusion of HBr is _____. 4.04 0.247 2.01 0.497 16.3 The National Weather Service routinely supplies atmospheric pressure data to help pilots set their altimeters. The units the NWS uses for atmospheric pressure are inches of mercury. A barometric pressure of 30.51 inches of mercury corresponds to _____ kPa. 77.50 775 1.020 103.3 16.01 A real gas will behave most like an ideal gas under conditions of _____. high temperature and high pressure high temperature and low pressure low temperature and high pressure low temperature and low pressure STP The temperature of a 15 g sample of lead metal increases from 22 degreeC to 37 degreeC upon the addition of 29.0 J of heat. The specific heat capacity of the lead is _____ J/g-K. 2.0 -0.13 0.00058 29 0.13 Calculate the work for the expansion of CO2 from 1.0 to 4.7 liters against a pressure of 1.0 atm at constant temperature. 3.7 L-atm 4.7 L-atm 0 L-atm -3.7 L-atm -4.7 L-atm How much heat is required to raise the temperature of a 5.75-g sample of iron (specific heat = 0.450 J/g degreeQ from 25.0 degreeC to 79.8 degreeC? 2.54 J 315 J 700 J 848 J 142 J Which of the following does not have a standard enthalpy of formation equal to zero at 25 degreeC and 1.0 atm? F2(g) Al(s) H2O(l) H2(g) They all have a standard enthalpy equal to zero. What is the relationship between the following terms? (Answer eithor ''directly'' or ''inversely'' proportional) Pressure and volume: proportional Volume and temperature: proportional Volume and number of moles: proportional Temperature and kinetic energy: proportional Root moan square velocity and mass of particle: proportional A sample of nitrogen gas (N2) weighs 6.83 g. How many moles of the gas are present? mol N2 At STP, how many liters of the gas are present? L N2 If the sample of N2 was combined with 1.00 mol of He gas in an 1.00 L container at 298 K, what is the total pressure in atmospheres? atm For the following reaction conditions, indicate whether the listed values are positive (+) OR negative (-).

Explanation / Answer

1)D

2)A

3)B

4)E

5)B

6)D

7)D

8)B

9)C

10)D

11)B

12)E (0.13KJ/kgK)

13)A

14)E (0.142J)

15)C

16)Inverse

direct

direct

direct

inverse

17)0.243 mol

5.44 L

3079 Kg/m^2

18) + ,+ ,+

- , - ,-

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.