Top answers

Part 2: from the empirical formula, calculate the molecular formula if the molecular weight of the substance is 180 g/mol

Molcular weight of CH2O = 30 g/mol 180/30 = 6 Molecular formula = C6H12O6
RT
Answered by Rachael T. • Chemistry tutor
2485 Views

Part 1: Calculate the empirical formula for a substance with the following composition: H 6.71%; C 40.00%; O 53.29%

C = 12 g/molO = 16 g/molH = 1 g/mol Ratio of C = 40/12 = 3.33Ratio of O = 53.29/16 = 3.33Ratio of H = 6.71/ 1 = 6.71Divide largest value by smallest value = 6.71/3.33 = 2Empirical formula = CH2O
RT
Answered by Rachael T. • Chemistry tutor
2979 Views

What should I expect from an Oxbridge interview?

The approach may vary in different colleges but my own experience was a lot less intimidating than I thought it would be. I was given a poem to analyse before I went in and then the first part of the convers...
JB
1892 Views

When should I use "tu" and "vous"?

The words “tu” and “vous” both translate to “you” in English. In English, one can use “you” to address any person or number of people whereas in French a distinction is made according to whom one is talking ...
GA
Answered by Gabriella A. • French tutor
2564 Views

How do I structure an essay?

At GCSE level essays should be structured with a simple Introduction- 3/4 paragraphs- Conclusion structure.Introduction: This should lay out your argument for the essay, and show how you will go about arguin...
BD
Answered by Beatrice D. • English tutor
2187 Views