Ateacher calculates the molar mass of sodium hydroxide as 37 g/mol. the true molar mass of sodium hydroxide is 40 g/mol. find the teachers percent error

Solution : Teachers percent error is 7.5%

Percent error can be calculated by using the percent error formula.

Accepted value is the true value.

Measured values is the calculated value.

In our question the True value (Accepted value) is given as 40 g/mol

Measured value (calculated value) is given as 37 g/mol

We will plug in the accepted value and measured value in the percent error formula and calculate the value of percent error.

Percent error = 7.5 %

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

the dissolution of polymer can be thermodynamically described in 2 steps.