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How would increasing the pressure of a system will have what effect on the equilibrium of this reversible reaction 3H2 + N2 <---> 2NH3?

Firstly, I would ask the student what they understand about Le Chateliers Principle. &quot;If a system is at equilibrium and a change is made to the conditions, then the system responds to counteract the cha...
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Answered by Fatema D. • Chemistry tutor
11423 Views

Find the opposite length of the triangle with hypotenuse length 5 and adjacent length 4.

I would start off by asking them if they know the Pythagoras theorem. If they don't, I would refresh their memory and explain that its a 2 +b 2 =c 2 where c is the hypotenuse (longest length). I would then a...
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Answered by Fatema D. • Maths tutor
3610 Views

How do I conjugate tener, ser, ir and hacer in the preterite tense in Spanish?

Tener, ser and hacer are all irregular verbs in the preterite tense. Tener is conjugated using the stem tuv- to which different endings are added. Yo tuv e , tú tuv iste , él/ella/usted tuv o , nosotros tuv ...
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Answered by Anna B. • Spanish tutor
21552 Views

How can I test to see if a sample a metal contains potassium?

The metals of group 1 (like potassium) can be identified by a flame test: A sample of the metal is placed in a bunsen flame, and the colour of the flame tells the metal. Potassium placed in the flame of a bu...
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Answered by Louis D. • Chemistry tutor
4067 Views

In the case of cystic fibrosis, two parents don't suffer from the disease but both carry the recessive cystic fibrosis allele. What is the probability that a child of the parents will suffer from cystic fibrosis.

25%. Draw a punnet square to find this: Write in the alleles for the parents along the top and side of the square, then match up the possible allele combinations for the children inside the square. Cystic fi...
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Answered by Louis D. • Biology tutor
5111 Views