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3 years ago

7

In a chemical equation, what do the coefficients indicate?

2 answers:

just olya [345]3 years ago

8 0

The answer is D. a number preceding an elemental or molecular symbol.

example - <u>2</u>H2 + O2 -> <u>2</u>H2O

The underlined is the coefficient.

Mekhanik [1.2K]3 years ago

6 0

In a chemical equation coefficients indicate the number of molecules/atoms involved in the reaction.

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Fe2O3 + 2Al -> Al2O3 + 2Fe

pashok25 [27]

Fe2O3 + 2Al ---> Al2O3 + 2Fe
Mole ratio Fe2O3 : Al = 1:2
No. of moles of Fe2O3 = Mass/RMM = 250 / (55.8 * 2 + 16 * 3) = 1.56641604 moles
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Write a nuclear equation to describe the spontaneous fission of 95 244 Am to form I-134 and Mo-107. Determine how many neutrons

MissTica

<u>Answer:</u> 3 neutrons are produced in the above nuclear reaction.

<u>Explanation:</u>

In a nuclear reaction, the total mass and total atomic number remains the same.

The nuclear reaction for the fission of Americium-244 isotope follows:

$^{244}_{95}\textrm{Am}\rightarrow ^{134}_{53}\textrm{I}+^{107}_{42}\textrm{Mo}+Y^1_0\textrm{n}$

<u>To calculate Y:</u>

Total mass on reactant side = total mass on product side

$\Rightarrow 244=134+107+(Y\times 1)\\\\\Rightarrow Y=244-241=3$

Hence, 3 neutrons are produced in the above nuclear reaction.

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