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Propane and Chlorine react in the presence of UV light to give 2-chloropropane and HCl. Estimate the enthalpy change of this reaction using the following bond enthaplies (KJ/mol) : C-H=+413, Cl-Cl=+243, C-Cl=+346 and H-Cl=+432.

Write equation, ensuring both sides are balanced.CH 3 CH 2 CH 3 + Cl 2 → CH 3 CH(Cl)CH 3 + HCl (2.) Draw structural formula of all reactants and products. (3.) Count the number of, and which types of bonds a...
JW
Answered by Jasmine W. • Chemistry tutor
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Rules for the future tense?

Verbs are split into first and second conjugation, then third and fourth conjugation.First and second conjugation take their stem plus:bobisbitbimusbitisbuntThird and Fourth conjugation take stem plus:am ese...
TH
Answered by Tom H. • Latin tutor
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Where does the circle (x-6)^2+(y-7)^2=4 intersect with y=x+3

Where does the circle (x-6) 2 +(y-7) 2 =4 intersect with y=x+3We need to sub y=x+3 into the circle equation giving us an equation in just x:(x-6) 2 +(x-4) 2 =4Next we expand out the brackets:x 2 -12x+36+x 2 ...
NL
Answered by Nicola L. • Maths tutor
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What are the rules for forming the passe compose/perfect tense using avoir and etre?

Past participles generally follow a simple rule.For verbs ending in -er , the past participle is made by adding the suffix -é to the root: parler (to speak) - parl é dessiner (to draw) - dessin é tomber (to ...
TH
Answered by Tom H. • French tutor
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5y = 45

5y = 45y = 45/5y = 9
GB
Answered by Georgie B. • Maths tutor
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