If a chemical change occure A. the composition remains the same
B. there is a change in composition
C. the physical state of matter change
D. all the physical properties remain the same

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa

it is a solid

explanation:

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