Answer the following questions using only the elements in the diagram. Each element may be used once, more than once or not at all. (a) Which element
(i) reacts with water to form a solution which turns litmus paper from red to blue, ... [1]
b) Write an equation for the reaction of the element in (a)(i) with water.
c) Describe your observation for the above reaction​

What is the percentage composition of carbon in the compound ch4

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

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.