5. Which pair of elements would combine to forin an ionic compound?

a. potassium and magnesium

c. silicon and oxygen

b. potassium and sulfur

d. silicon and sulfur

According to the Arrhenius theory, when a base dissolves in water it produces

The equilibrium constant is 8.8 x 102 at a particular temperature for the reaction: H2 (g) + I2 (g) ⇌ 2HI (g) Use this information to decide what will happen, given the following sets of initial conditions: Will the reaction shift to the left, to

The bond strength of compounds A, B, C, and D as measured by their bond energies (kJ/mol) are 350, 500, 180, and 1,450, respectively. Which compound will most likely conduct electricity when dissolved in water?

When carbon disulfide is formed from its elements, heat is absorbed. Calculate the amount of heat in (kj) absorbed when 5.66g of carbon disulfide is formed

A conjugate base is the species that a. remains after a base has given up a proton. b. is formed by the addition of a proton. c. is formed by the addition of a proton to a base. d. remains after an acid has given up a proton.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.

What happens to wood when it burns?

El cuerpo humano tiene unos 6 billones de células (6,0x1012) y la población de la Tierra es de unos 8 000 millones de personas. Con estos datos aproximados, calcula las moles de células humanas que hay en la Tierra.