Top answers

Describe one way that labour turnover can be reduced

Labour turnover is the amount of employees leaving the business in a given period, often expressed as a percentage: number of employees leaving/total employees x 100. Reducing this figure will need the busin...
TL
3601 Views

How should I revise for my A Level exams?

How should I revise for my A level exams? There are many ways in which you can revise for your exams and they don’t have to be boring – you don’t have to sit and read a textbook over and over again. Find all...
TN
5301 Views

What mass of CO2 will be produced when 50 g of CaCO3 decomposes?

CaCO 3 decomposition: CaCO 3 -> CaO + CO 2 The first thing to do here is to calculate the relative formula mass of CaCO 3 and CO 2 . RFM of CaCO 3 = 40 g + 12 g + (16 g x 3) = 100 g RFM of CO 2 = 12 g + (...
JH
Answered by Joshua H. • Chemistry tutor
99272 Views

The relative formula mass of CaO is 56 and the relative formula mass of CO2 is 44. What is the mass of CaO that can be obtained from 200 g of CaCO3. CaO3 -> CaO + CO2

We are given the relative formula mass (RFM) of CaO and CO 2 , we should therefore calculate the RFM of CaO 3 : RFM of CaCO 3 = 40 + 12 + (16 x 3) = 100 If we look at the reaction in the question, we can see...
JH
Answered by Joshua H. • Chemistry tutor
32184 Views

What is the relative formula mass of CaCO3?

The relative formula mass (RFM) is simply just a sum of the atomic masses that make up the compound in question. Ca = 40 C = 12 O = 16 RFM of CaCO 3 = 40 + 12 + (16 x 3) = 100 Note we have three oxygens so w...
JH
Answered by Joshua H. • Chemistry tutor
73112 Views