You are Here: Home

1. can some one explain to me this question and the answer is D
Attached Images

2. Since you have 2.8g of the molecule with an Mr of 28, that means you have 0.1 mole, equivalent to 0.6X10^23 molecules, each molecule has 6 atoms, 2C and 4H so that means that 0.6X6X10^23=3.6X10^23
3. (Original post by alkyone)
Since you have 2.8g of the molecule with an Mr of 28, that means you have 0.1 mole, equivalent to 0.6X10^23 molecules, each molecule has 6 atoms, 2C and 4H so that means that 0.6X6X10^23=3.6X10^23
so you mean (0.1*6)*6.0x10^23, thanks i just checked nad its right thanks.
4. No problem

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 21, 2016
Today on TSR

### Am I pregnant?

...or just paranoid?

### A robot wrote Harry Potter?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.