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2 years ago

What type of reaction is the rusting of iron?

Chemistry

1 answer:

FrozenT [24]2 years ago

7 0

(a) single composition

Explanation:

Rusting of iron it happens when iron will react with oxygen to form iron (III) oxide.

4 Fe + 3 O₂ → 2 Fe₂O₃

This reaction is a single composition reaction because two elements will react to form a single substance.

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types of chemical reactions

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Annoying user "Living under a bridge"<br><br><br> its for a crossword

natulia [17]

I think the word might be a “troll”

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2 years ago

at what temperature in celsius would a gas have volume of 13.5 L at a pressure of 0.723 atm, if it had a volume of 17.8 L at a p

Alex

Answer:

initial temperature= $-3.31^{\circ}C$

Explanation:

Assuming that the given follows the ideal gas nature;

$P_1=0.723atm$

$V_1=13.5L$

$T_1=?$

$P_2=0.612atm$

$V_2=17.8L$

$T_2=28 ^{\circ}C =273+28K=301K$

mole of gass will remain same at any emperature:

$\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}$

putting all the value we get:

$T_2 =269.7K =-3.31 ^{\circ} C$

initial temperature= $-3.31^{\circ}C$

6 0

2 years ago

Energy removal is illustrated in. A. Changing water ice to waterB. Changing water to steamC. Boiling of gasolineD. Evaporation o

Kryger [21]

Answer:

D. Evaporation of sea water

Explanation:

6 0

1 year ago

A certain reaction has an activation energy of 39.5 kJ/mol. As the temperature is increased from 25.0°C to a higher temperature,

riadik2000 [5.3K]

Answer:

Explanation:

We shall apply Arrhenius equation which is given below .

$ln\frac{k_2}{k_1} = \frac{E_a}{R} [\frac{1}{T_1} -\frac{1}{T_2} ]$

K₂ and K₁ are rate constant at temperature T₂ and T₁ , Ea is activation energy .

Putting the given values

$ln\frac{5.9}{1} = \frac{39500}{8.3} [\frac{1}{298} -\frac{1}{T_2} ]$

$.000373= [\frac{1}{298} -\frac{1}{T_2} ]$

T₂ = 335.27 K

= 62.27 °C

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3 years ago

What is Zeff of phosphorus

professor190 [17]

Answer:

Explanation:

Here is an illustration showing how to "calculate" +5 as the effective nuclear charge (Zeff) for phosphorus. We are not implying that the electrons are in orbits here, this is simply showing inner shell electrons that shield the outer valence electrons from the full nuclear charge.

5 0

2 years ago