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A naturally occurring sample of the element boron has a relative atomic mass of 10.8 In this sample, boron exists as two isotopes. Calculate the percentage abundance of 10B in this naturally occurring sample of boron.

The answer is 20%. This is a failry common question and stomps many students.

The easiest way to answer this question, in my opinion, is to see that this question is asking you to figure out the ra...

TA
Answered by Tony A. Chemistry tutor
36568 Views

Can I have some guidance on the correct answer for this word order, grammar question?

Here's an example: 'On each biscuit (was wrote) (wrote) (write) (was written) (was writ) a word in bright pink icing.' For this type of question you will need to circle the correct word(s) that are shown ...

EM
Answered by Ella M. Maths tutor
2444 Views

When should the subjunctive be used instead of the indicative?

The subjunctive is used when there is an element of doubt or uncertainty expressed in a phrase, for example, “il n’est pas certain que…”, “il n’est pas sûr que…” or “il est douteux que…”. Other subjunctiv...

CS
Answered by Chloe S. French tutor
1655 Views

If I was talking about spirituality regarding Wordsworth's 'Ode: Intimations of Immortality' and Blakes 'The Tyger', what would be an example of an introduction with a clear thesis statement?

The thesis statement is underlined/bold and always at the end of an introduction... NOTE: (O) and (T) are the abbreviated forms of the poems' titles. Both William Blake and William Wordsworth use various ...

EM
Answered by Ella M. English tutor
3304 Views

How do you conjugate verbs in the present tense?

It depends on the verb - does it end in an 'er', 're', or 'ir'? With regular verbs, you simply take the stem (the part without the aforementioned ending) and then for 'er' verbs, add 'e', 'es', 'e', 'ons'...

HP
Answered by Heidi P. French tutor
1819 Views

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