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2 years ago

What do the coefficients in the following balanced chemical equation mean?

Chemistry

1 answer:

mafiozo [28]2 years ago

6 0

It's either B or D because there would be 2 coefficients of hydrogen and one of oxygen

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What is the first basic metal on the periodic table

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The first basic metals on the periodic table are alkali metals.

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2 years ago

Calculate the molarity of the solution.

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Molarity = moles of solution/ liter of solution
4.32x10^2/20
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Imagine you are handed a mineral sample. It breaks with a conchoidal fracture, but displays no cleavage. It does not react with

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Quartz.

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3 years ago

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2 years ago

For the reaction IO3–(aq) + 5 I–(aq) + 6 H+(aq) → 3 I2(aq) + 3 H2O(l) the rate of disappearance of I–(aq) at a particular time a

scoray [572]

Answer: The rate of appearance of $I_2(aq)$ is $1.44\times 10^{-3}mol/Ls$

Explanation:

Rate of a reaction is defined as the rate of change of concentration per unit time.

Thus for reaction:

$IO_3^-(aq)+5I^-(aq)+6H^+(aq)\rightarrow 3I_2(aq)+3H_2O(l)$

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

$Rate=-\frac{1d[I^-]}{5dt}=+\frac{d[I_2]}{3dt}$

Given: $-\frac{d[I^-]}{dt}]$ = $2.4\times 10^{-3}mol/Ls$

$+\frac{d[I_2]}{dt}=-\frac{3d[I^-]}{5dt}=-\frac{3}{5}\times 2.4\times 10^{-3}mol/Ls=1.44\times 10^{-3}mol/Ls$

The rate of appearance of $I_2(aq)$ is $1.44\times 10^{-3}mol/Ls$

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2 years ago