Top answers

Chemistry
All levels

Describe the shape of and bonding in a molecule of benzine. Explain why benzene doesn't readily undergo reactions.

Flat 6-membered ring with 6 carbons. Each carbon in bonded two 1 hydrogen and 2 other carbons. Because a carbon must always have 4 bonds, there is a delocalised fourth electron on each carbon, which moves...

MZ
Answered by Michal Z. Chemistry tutor
2347 Views

25cm3 NaOH was titrated with 0.05mol dm-3 HCl. 21.5m3 of HCl neutralised 25cm3 of NaOH. What is the concentration of NaOH in mol dm-3?

NaOH + HCl --> NaCl + H2O 1 : 1 : 1 moles (mol) = concentration (mol dm-3) x volume (dm3)

BA
Answered by Britta A. Chemistry tutor
4756 Views

Name Group 0 in the periodic table. What is the tree in boiling points and why?

The Noble GasesThe boiling points increase as you go down the group. This is because the atoms get larger and the intermolecular forces become more numerous and stronger hence more energy is needed to bre...

EB
Answered by Ellie B. Chemistry tutor
2019 Views

Bethan prepared some ethoxyethane (line 6) by reacting ethanol with concentrated sulfuric acid. She used 69g of ethanol (Mr=46) and obtained a 45% yield of ethoxyethane (Mr=74). Calculate the mass of ethoxyethane obtained.

  1. Equation from line 6 is: 2 (ethanol) -------> 1 (ethoxyethane)
    2. The ratio of reaction is 2:1. This is the ratio of moles not mass, i.e., 2 moles of ethanol give 1 ...
SD
2101 Views

Give the name of the monomer used to make poly(chloroethene). And describe how monomer molecules form polymer molecules.

  1. Briefly explain the etymology of hydrocarbon names and how polymers are named. The answer is therfore, chloroethene.
    2. Draw a structure for chloroethene and show in diagram how chloroethene p...
SD
12293 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences