Achemistry student carried out an experiment; the mass she recovered was 3.15 g; her percent error was 1.61%. what was the accepted value?

The accepted value was either 3.10 g or 3.20 g

Why?

There are two possibilities:

The formula for the percent error is the following:

Clearing for Accepted Value and inputting the values we get the following:

Another possibility is that the the Accepted value is higher. In that case we'd get:

.

The most likely value for the accepted value is 3.20 g, as most experiments in which mass is recovered yield a lower experimental value than the initial one.

Have a nice day!

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