Five identical 1.0 liter flasks contain the following gases at 25 degree C and 1

Question

Five identical 1.0 liter flasks contain the following gases at 25 degree C and 1 atmosphere pressure. For which gas do the molecules have the smallest average kinetic energy? a. He b. Cl_2 c. NH_3 d. all the gases are the same A type of bonding in HBr is a. London b. dipole-dipole attraction c. hydrogen d. ionic A relatively large energy separation between an insulator's highest filled electron energy band the next higher vacant energy band is a(n): a. insulator b. conductor c. glass d. forbiddenzone Water is the only solid which is less dense than its liquid and on the water phase diagram, water is the only material whose solid-liquid phase boundary slope is: a. positive b. negative c. vertical d. horizontal _____ states that "at a constant pressure, the volume occupied by a definite weight of a gas is directly proportional to the absolute temperature." a. Boyle's Law b. Graham's Law c. Dalton's Law d. Charles' Law The type of bonding in H_2O is a. London b. dipole-dipole attraction c. hydrogen d. ionic An increase in atmospheric CO_2 concentration will increase global temperatures is a statement of the: a. Dalton Law effect b. Charles' Law c. Greenhouse effect d. insulation effect

Explanation / Answer

24)

Here Temperature is same for all

average KE = (3/2)*n*R*T

average KE depends only on T which is same for all

So, All the gases will have same KE

Answer: d

25)

HBr is an ionic compound formed by H+ and Br-

Answer: d

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