PLEASE ASSIST URGENT $,$ VEY IMPORTANT Question $111$

You find an unknown material in the lab. On the label you read the following:

$Mr=159\mathrm{.}15$

$n=0\mathrm{.}01012$

a$)$ Given what you have learnt in this module, do you think you will be able to identify

the

material in the vial using the information given?

b$)$ Use the information given and calculate the mass that needs to be weighed.

Question $122$

Using the equation given below, answer the following questions $($phases have been

removed for clarity's sake$)$:

NaOH$+HN{O}_{3}NaN{O}_3+H_{2}O$

a$)$ You add $0\mathrm{.}2917g$ of NaOH and $10mL$ of $1MHN{O}_3,$ what do you expect the

theoretical

yield to be$?$

b$)$ If the yield of the reaction is $71\mathrm{.}2\%$ how much water, in grams, does the reaction

produce?