The reaction 4al(s) + 3o2(g) --> 2al2o3(s) ? h = -3351 kj is and therefore heat is by the reaction

-be a crystalline solid

- be soluble in water

-conduct electricity

hope this : )

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

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