Fe2O3 + H2 --> Fe + H2OA) what mass of hydrogen gas must be consumed to produe 10.0 g of iron metal?

B) what mass of iron(lll) oxide, Fe2O3, must be consumed to prepare 2.50g of iron metal

Answers

Answer 1

Answer: A) 10.0g of Iron is $(10.0)/(55.8)=179mmol$ of Iron.

One mole of dihydrogen is required to form one mole of iron, hence you'll need $0.179*1.00=0.179g$ of dihydrogen.

B) Likewise : 2.50g of Iron is $(2.50)/(55.8)=44.8mmol$ of Iron, hence we'll need $44.8*(3*16+2*55.8)=7.15g$ of Fe2O3.

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Where does the energy from the nuclear reaction go?

Answers

The energy fro the nuclear reaction go on to split other nearby atoms

I hope that's help !

If the half-life of an unstable isotope is 10,000 years, and only 1/8 of the radioactive parent remains in a sample, how old is the sample?

Answers

Have in mind that a radioactive half-life is the amount of time it takes for half of a sample to decay. So, if the amount remaining after x half-lives is (1/2)↑x times the amount you started with. So for 1/18 of radioactive parent then (1/2)↑6 equals 30,000 years

Answer: 30,000

Explanation: I'm taking gradpoint

A region that has a large number of atoms whose magnetic fields are lined up parallel to a magnet’s field isA. the magnetosphere.
B. the magnetic declination.
C. a magnetic domain.
D. a ferromagnetic region.

Answers

Magnetic domain

Its speed can be slowed because the magnetic field can be turned on and off, can have its direction reversed and can have its strength changed. However, The speed of a magnetic field that is produced by a current is impossible to be slowed.

What size container do you need to hold 0.0459 mol of N2 gas at stp

Answers

The size of the container needed to hold the gas is 1.03 L

Data obtained from the question

Number of mole (n) = 0.0459 mole
Pressure (P) = STP = 1 atm
Temperature (T) = STP = 273 K
Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V) =?

How to determine the volume

The volume of the container needed can obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side by P

V = nRT / p

V = (0.0459 × 0.0821 × 273) / 1

V = 1.03 L

Therefore, the size of the container needed is 1.03 L.

Learn more about ideal gas equation:

brainly.com/question/4147359

Answer:

The size of the container needed is 1,03 liters

Explanation:

We use the formula PV=nRT. The STP conditions correspond to 1 atm of pressure and 273 K of temperature.

PV=nRT V=(nRT)/P

V= (0,0459 mol x 0,082 l atm/ K mol x 273K)/1 atm= 1,0275174 liters

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Answers

The answer is Na < Cl

Chlorine is more electronegative than sodium because this follows the trend of the periodic table. The trend states that an element's electronegativity increases from left to right of a period and bottom to up of a group. Since sodium and chlorine are from the same period, and chlorine is at the right of sodium, chlorine is more electronegative.

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Answers

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