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3 years ago

If 6.0 g of fe(co)5 reacts with 4.0 g of pf3 and 4.0 g of h2, which is the limiting reagent

1 answer:

5 0

<span>Number of moles of Fe(CO)5 = mass/molar mass = (6.0 g) / (195.8955 g/mol) = 0.03 mol Number of moles of PF3 = (4.0 g)/ (87.97 g/mol) = 0.0455 mol Number of moles of H2 = (4.0 g) / (2.016 g/mol) = 1.984 mol From the balanced equation 1 mol of Fe(CO)5 reacts with 2 mol of PF3 and 1 mol of H2 then 0.03 mol of Fe(CO)5 will need 0.03 (2/1) = 0.06 mol of PF3 and 0.03 mol of H2 Since we have less PF3 ( 0.0455 mol instead of 0.06 mol), that is the limiting agent</span>

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Los procesos químicos que permiten reciclar el carbono entre plantas y animales son:

tigry1 [53]

Answer:

En un proceso llamado respiración, los animales y las plantas toman oxígeno del aire y devuelven dióxido de carbono.

Explanation:

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3 years ago

Hep balance equation

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3 years ago

Hydrogen bonding occurs as a result of

Sladkaya [172]

Answer:

Answer from thoughtco.com

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Explanation:

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3 years ago

If the rate of disappearance of N2O5 is equal to 1.40 mol/min at a particular moment, what is the rate of appearance of NO2 at t

kramer

Answer:

2.8 mol/min is the rate of appearance of $NO_2$ at that moment.

Explanation:

$2N_2O_5\rightarrow 4NO_2+O_2$

Rate of the reaction = R

$R=\frac{-1}{2}\frac{d[N_2O_5]}{dt}=\frac{1}{4}\frac{d[NO_2]}{dt}=\frac{1}{1}\frac{d[O_2]}{dt}$

Rate of disappearance of $N_2O_5$ is $=-\frac{d[N_2O_5]}{dt}= 1.40 mol/min$

$R=\frac{-1}{2}\frac{d[NO_2]}{dt}$

$R=\frac{1}{2}\times 1.40 mol/min=0.70 mol/min$

Rate of appearance of $NO_2$ is $=\frac{1}{4}\frac{d[NO_2]}{dt}:$

$R=\frac{1}{4}\frac{d[NO_2]}{dt}$

$\frac{d[NO_2]}{dt}=4\times 0.70 mol/min=2.8 mol/min$

2.8 mol/min is the rate of appearance of $NO_2$ at that moment.

7 0

4 years ago

A neutral atom of sodium (Na) has an atomic number of 11 and a mass number of 23. How many neutrons would be found in the nucleu

SCORPION-xisa [38]

<h3>Answer:</h3>

12 neutrons

<h3>Explanation:</h3>

A neutral atom is an atom that has no charge, which means it has no additional electrons or electrons removed from its energy levels.
An atom is made up of sub-atomic particles neutrons and protons found in the nucleus and electrons found in the energy levels.
The number of protons in the nucleus of a neutral atom is known as the atomic number.
In a neutral atom, the atomic number is equal to the number of electrons as protons are equal to the number of electrons.
The sum of protons and neutrons in the nucleus of an atom is known as the mass number of an atom.

Therefore;

Protons = Atomic number

Protons + neutrons = Mass number

Thus;

Neutrons = Mass number - protons or

= Mass number - atomic number

In this case;

Atomic number = 11

Mass number = 23

Thus;

Neutrons = mass number - atomic number

= 23 - 11

= 12 neutrons

7 0

3 years ago