Dãy gồm các ion X+, Y- và nguyên tử Z đều có cấu hình electron 1s22s22p6 là: (ĐH khối A – 2007)

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness