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bearhunter [10]
3 years ago
7

Please help with 2,3,4 will give brainlist asap

Chemistry
1 answer:
MrRa [10]3 years ago
6 0

Answer:

#2

C2H4 + 3O2 ----> 2CO2 + 2H2O

#3

2FeBr3 + 3H2SO4 ----> Fe2(SO4)3 + 6HBr

#4

2Al + 3F2 -----> 2AlF3

Explanation:

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<h3>Further explanation</h3>

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.

For reaction :

\tt aA+bB\rightarrow cC+dD

The rate reaction :

\tt -\dfrac{1}{a}\dfrac{d[-A]}{dt}= -\dfrac{1}{b}\dfrac{d[-B]}{dt}=\dfrac{1}{c}\dfrac{d[C]}{dt}=\dfrac{1}{d}\dfrac{d[D]}{dt}

Reaction for formation CCl₄ :

<em>CH₄+4Cl₂⇒CCl₄+4HCl</em>

<em />

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0.05 mol/dm³ = reaction rate x 1⇒reaction rate = 0.05 mol/dm³

The rate of disappearance of chlorine gas (Cl₂) :

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4 0
3 years ago
when writing numbers using scientific notation, numbers greater than one have..... exponents and numbers less than one have.....
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Explanation:

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