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horsena [70]
1 year ago
9

Nuclear power plants use a fission reaction of uranium to generate heat to power a generator. A fission reaction is a chain reac

tion that continues to build and create more heat. How is the chain reaction controlled?
A.
The amount of uranium fuel can be reduced to slow the chain reaction down.
B.
The plant uses control rods that can be inserted into the reaction vessel to control the reaction.
C.
Water is added to the reaction to the reaction vessel to cool it down and slow the chain reaction.
D.
The extra heat that is created from the chain reaction is released into the air and keeps the reaction under control.
Chemistry
1 answer:
LekaFEV [45]1 year ago
7 0
ANSWER
B.

Explanation : it’s B because the control rods used are usually made of boron which boron is a non fissile material hence won’t undergo fission when bombarded or collided with neutrons.
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19) Which set of coefficients correctly balances this chemical equation?*
Bas_tet [7]

Answer:

6,1,2

Explanation:

_Ag + _N2 => _Ag3N

LHS RHS

Ag=1×6=3 Ag=3×2=6(Balanced)

N=2×1=2 N=1×2=2(Balanced)

coefficient=6,1,2

4 0
3 years ago
What is the molecular formula for a compound that is 44.87% potassium, 36.7%
Phoenix [80]

Answer:

Molecular formula: S4K8O16  empirical formula: SK2O4

Explanation:

First we find the moles of each by first finding grams (using the percent) and then using stoichiometry to convert into moles:

Sulfur: 696 *.18 = 125.28grams S* \frac{1 mole S}{32.065 g S} = 3.907 moles S

Potassium: 696 *.4487 = 312.2952 *\frac{1 mole K}{39.08 g K}= 7.99117 mole K

Oxygen: 696 * .367 = 255.432 * \frac{1 mol O}{16g O} = 15.9654 mole O

Then we divide each value by the atom with the smallest number of moles to find the mole ratio:

3.907/3.907= 1

7.99117 mole K/ 3.907= 2.043

15.9654 mole O/ 3.907= 4.08

The empirical formula is SK2O4

To find the molecular formula, we divide the mass given (696) by the mass of the empirical formula (174.22) to get 4. We then divide each atom by 4.

Molecular formula: S4K8O16

5 0
2 years ago
Someone please help me with this. Thanks!
stira [4]

Answer:

Kim kim kim kim kim ath marath enthe kantha

Explanation:

Ninn chumbenem enne thellerthii.

Nin vadabell enne shwasichu!

8 0
2 years ago
Both hydrogen sulfide (H2S) and ammonia (NH3) have strong, unpleasant odors. Which gas has the higher effusion rate? If you open
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Explanation:

3 0
3 years ago
15A.4(a) What is the temperature of a two-level system of energy separation equivalent to 400 cm−1 when the population of the up
maksim [4K]

Answer:

T = 525K    

Explanation:

The temperature of the two-level system can be calculated using the equation of Boltzmann distribution:

\frac{N_{i}}{N} = e^{-\Delta E/kT}  (1)

<em>where Ni: is the number of particles in the state i, N: is the total number of particles, ΔE: is the energy separation between the two levels, k: is the Boltzmann constant, and T: is the temperature of the system </em>         

The energy between the two levels (ΔE) is:

\Delta E = hck    

<em>where h: is the Planck constant, c: is the speed of light and k: is the wavenumber</em>      

\Delta E = 6.63\cdot 10^{-34} J.s \cdot 3\cdot 10^{8}m/s \cdot 4 \cdot 10^{4}m^{-1} = 7.96 \cdot 10^{-21}J  

Solving the equation (1) for T:

T = \frac{-\Delta E}{k \cdot Ln(N_{i}/N)}  

<em>With Ni = N/3 and k = 1.38x10⁻²³ J/K, </em><em>the temperature of the two-level system is:</em><em> </em>

T = \frac{-7.96 \cdot 10^{-21}J}{1.38 \cdot 10^{-23} J/K \cdot Ln(N/3N)} = 525K                                  

I hope it helps you!

3 0
3 years ago
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