SQA Higher Chemistry - molar calculation question

[WeAllHaveWings]

Anyone want to take a stab at 9c. I don't have a clue about chemistry, Ds is insistent the book answer is wrong and he is right. His and the books answer is the same number but he is arguing over what is the correct unit

Is the answer:

0.12 cm3, or
0.12 litres

12 cm3

🤦🏻‍♀️ ds says you are wrong too (he is a cocky little shite sometimes)

Says it should be 60 = 0.5 x VB, so VB = 120cm3 = 0.12 litres which was his answer......

Book says 0.12 cm3

Your son is correct.
Universally has multiplied 1 x 0.5 and made it 5 , hence their answer.
Must admit I woud call it 120cm3 cos was taught to go to whole numbers.

He says he's never seen the formula Universally has used, they were taught to do it another way and were told to do in litres.

So the Hodder Gibson book is wrong 😱. He is struggling with another 2 which he can't see how he got wrong either. Will get him to double check tomorrow. End of unit test on Thursday 🤦🏻‍♀️

I have spotted an error in an SQA study guide book before. So the book may well be wrong. Helpful. I was trying to help my son with Nat 5 history with a leckie and leckie book. Read a section over and over before I realised it made no sense. Got the rage so emailed them and they apologised. Said they would send me another book do my choice. Do wonder how many errors there are. Does no one proof read? Made me wonder how well used these guides are

Oops, mental maths isn’t good

Though use the formula - makes volume or molarity easier to calculate and to remember