What is the 11th term of this geometric sequence?: 16384, 8192, 4096, 2048 https://youtu. be/X0muIC4xO9s

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answer

16

Explanation:

G.p=ar^n-1

first term a =16384

r ratio different t2/t1=8192/16384=1/2

n=11

g.p =16384(1/2)¹¹-¹

g.p=16384(1/2)¹⁰

g.p= 16384(1/1024)

=16

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol