Search our library of Chemistry GCSE questions

Top answers

Chemistry

GCSE

2.4 g of magnesium reacts with 1.6 g of oxygen. What is the empirical formula of the oxide formed?

Ar of Magnesium = 24; Ar of Oxygen = 16

number of moles = mass divided by Ar

number of moles of Mg = 2.4/24 = 0.1

number of moles of Oxgen = 1.6/16 = 0.1

Answered by Katrina T. • Chemistry tutor

16319 Views

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

CaCO₃decomposition:

CaCO₃ -> CaO + CO₂

The first thing to do here is to calculate the relative formula mass of CaCO₃ and CO

Answered by Joshua H. • Chemistry tutor

93750 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 CO₂, we should therefore calculate the RFM of CaO_³:

RFM of CaCO₃= 40 + 12 + (16 x 3) =...

Answered by Joshua H. • Chemistry tutor

28088 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 CaC...

Answered by Joshua H. • Chemistry tutor

61499 Views

24 g of Magnesium reacts with 16 g of Oxygen to produce 40 g of magnesium oxide. What mass of magnesium would you need to produce 10 g of magnesium oxide?

There are two ways to work this out, one is a lot simpler than the other, I will post the simpler method here.

The relative formula mass of magnesium oxide, MgO (40), is just a sum of the...

Answered by Joshua H. • Chemistry tutor

68481 Views

←

191

192

193

194

195

→

Popular Requests

Maths tutor Chemistry tutor Physics tutor Biology tutor English tutor GCSE tutors A level tutors IB tutors Physics & Maths tutors Chemistry & Maths tutors GCSE Maths tutors

Terms & Conditions|Privacy Policy

CLICK CEOP

Internet Safety

Payment Security

Cyber

Essentials

Search over 10,000 free study notes

Top answers

2.4 g of magnesium reacts with 1.6 g of oxygen. What is the empirical formula of the oxide formed?

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

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

What is the relative formula mass of CaCO3?

24 g of Magnesium reacts with 16 g of Oxygen to produce 40 g of magnesium oxide. What mass of magnesium would you need to produce 10 g of magnesium oxide?

We're here to help

Company Information

Popular Requests

© MyTutorWeb Ltd 2013–2025

CLICK CEOP