Which elements combine by forming an ionic bond

A) Sodium and potassium

B) Sodium and oxygen

C) carbon and oxygen

D) Carbon and sulfur

If 0.25 mol of HClO2 is added to enough water to prepare a 0.25 M HClO2 aqueous solution, what is the concentration of H3O + (aq) at equilibrium? At this temperature, Kc is 0.15 for the equation, HClO2 (aq) + H2O (l) ⇌ H3O + (aq) + ClO2 - (aq)

Which subatomic particles are located in the nucleus of an He-4 atom? (1) electrons and neutrons (2) electrons and protons (3) neutrons and protons (4) neutrons, protons, and electrons

How many of are in 1g

What causes a molecule to be polar?

Can you think of an example of bacteria that you have interacted with

Determine the molar mass of an unknown monoprotic acid to two decimal places if 20.01 ml of a 0.098 m naoh solution were used to titrate 0.215 g of the unknown acid

A diatomic molecule with a triple covalent bond is A. H2 B. N2 C. O2 D. Br2 (P. S. The answer turned out to be B. N2)

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?

Calculate the number of H atoms in 0.190 mole C 6 H 14 O .