The standard enthalpies of formation of various iodine species are as follows: Substance ΔH°f (kJ/mol) I(g) +107 I2(g) +21 HI(g) +26 What additional information is needed to calculate the standard enthalpy change of the following reaction? H2(g) + I2(g) → 2HI(g)

imma come back to you hold on

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l