Lecte des ariswer for the question. 20. How many moles of a solute is present in 4.00 L of an 8.30 M solution?
A. It depends on whether the solute is ionic or covalent.
O B. 33.2 mol
C. It depends on the volume of water.
D. 8.3 mol

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)