3 years ago

I don’t know how to do this please help

Chemistry

1 answer:

frez [133]3 years ago

8 0

Answer: i think the answer is 101.1

Explanation:

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In this equation, what should be the coefficients of the reactants and products?

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4 I₂+ 9 O₂ = 2 I₄O₉

Reactants :

I₂ , O₂

Products :

I₄O₉

hope this helps!

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4 years ago

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3 years ago

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Two or more different elements chemically combine to form compounds. True or false

vodomira [7]

Answer:

true

Explanation:

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The point in a titration when the added amount of standard reagent is equal to the amount of analyte being titrated.

creativ13 [48]

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3 years ago

The conversation of cyclopropane to propene in the gas phase is a first order reaction with a rate constant of 6.7x10-⁴s-¹. a) i

Rus_ich [418]

Answer: a) The concentration after 8.8min is 0.17 M

b) Time taken for the concentration of cyclopropane to decrease from 0.25M to 0.15M is 687 seconds.

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

a) concentration after 8.8 min:

$8.8\times 60s=\frac{2.303}{6.7\times 10^{-4}s^{-1}}\log\frac{0.25}{a-x}$

$\log\frac{0.25}{a-x}=0.15$

$\frac{0.25}{a-x}=1.41$

$(a-x)=0.17M$

b) for concentration to decrease from 0.25M to 0.15M

$t=\frac{2.303}{6.7\times 10^{-4}s^{-1}}\log\frac{0.25}{0.15}\\\\t=\frac{2.303}{6.7\times 10^{-4}s^{-1}}\times 0.20$

$t=687s$

7 0

3 years ago