Which class of elements will contain both solids and gases at room temperature?

What is zero on the Kelvin scale? A. The temperature at which water freezes B. 273 on the Celsius scale C. The beginning of the Fahrenheit scale D. The temperature at which the kinetic energy goes to zero

What happens to a system in dynamic equilibrium when it is disturbed in some way?

What is a common property of metals? a) insulates from electricity b) conducts electricity c) has very little reactivity d) is liquid at room temperature

If element x has 63 protons how many electrons does it have?

Nitrogen and hydrogen gases react to form ammonia gas via the following reaction: N2 (g) + 3H2 (g) →2NH3 (g) At a certain temperature and pressure, 1.9 L of N2 reacts with 5.7 L of H2.

Hexyne. What does the name of this hydrocarbon tell you about its molecular structure?

Which of the following processes includes all of the others? Group of answer choices transport of an ion down its electrochemical gradient osmosis passive transport facilitated diffusion

How is the Bohr atomic model different from the plum-pudding model? A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout. B. In Bohr's model, the atom's mass is mostly made up of electrons instead of protons.

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed

For which one of the following molecules is the indicated type of hybridization not appropriate for M the central atom? a. BeCl2 sp2 b. SiH4 sp3 c. BF3 sp2 d. C2H2 sp e. H2O sp3