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Critical mass can be achieved by compressing the sample of americium-241 and also removing the deflective shield surrounding the sample.

Critical mass of a nuclear reaction is the mass of nuclear fuel which is just sufficient for a nuclear fission reaction to proceed and be sustained.

In order to achieve critical mass, the density of the fuel is increased by compressing the sample of americium-241 and also remove the deflective shield surrounding the sample.

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Answer: A

Explanation:

Answer:

2fe2o3+3c=4fe+3co2

Explanation:

because 2×2 =4 fe &2×3=6 so we put it like 3co2

Answer:

I believe its preferred to as "Laughing Gas." It's also called, Nitrous Oxide.

Answer:

Because the Earth is always shifting, so research has to constantly be updated.

Answer:

3AlCl₃

Explanation:

molar mass of aluminum chloride AlCl₃ is 133.33 g/mole

133.33 times 3 is 400

put 3 in front of AlCl₃

3AlCl₃

https://study.com/academy/lesson/aluminum-chloride-formula-molar-mass-decomposition.htm

Answer:

The answer would be "Yellow"

Explanation:

Hope this helps!

Answer:

Gulls, or colloquially seagulls, are seabirds of the family Laridae in the suborder Lari. They are most closely related to the terns and skimmers and only distantly related to auks, and even more distantly to waders. Until the 21st century, most gulls were placed in the genus

Answer:

abt 2 moles

Explanation:

1 mole of carbon atoms per mole of carbon dioxide = 6.02 x 1023 carbon atoms. 2 mole of oxygen atoms per mole of oxygen atoms = 2 x 6.02 x 1023 oxygen atoms.

Dust clouds that moved to the east coast of the united states were composed mostly of silt and clay particles due to constant ploughing during drought.

This is defined as dry period in the climate due to insufficient rainfall in the area at a given time.

The drought led to the soil being constantly ploughed thereby loosening and changing the soil type which is susceptible to wind erosion.

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Answer:

the correct answer is a. the lewis structure represents only the outer energy level

The heat produced when iron oxide reacts with carbon monoxide is -23.47 kJ/mol.

The standard enthalpy of the reaction is given by the enthalpy of formation of the products and the reactants. The reactants and the products of the reaction are:

Fe₂O₃ (s) + 3CO (g) → 2Fe(s) + 3CO₂ (g)

We know,

The standard enthalpy of formation of iron oxide = −825.50 kJ/mol

The standard enthalpy of formation of carbon monoxide = −110.53 kJ/mol

The standard enthalpy of formation of carbon dioxide = −393.52 kJ/mol

The standard enthalpy of reaction is calculated as:

[tex]\rm \Delta H_{rxn}[/tex] = [2(0) + 3(−393.52)] - [1(-825.50) + 3(-110.53)]

= (0−1180.56+825.50+331.59)

= −23.47 kJ/mol

Therefore, −23.47 kJ/mol is produced.

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Answer:

4.5 gm left

Explanation:

45 /15   = 3 half lives     (1/2 )^3 =1/8 th

1/8  * 36 = 4.5 gm

In order to satisfy charge conservation and lepton number conservation the other products must be neutron.

The principle of conservation of mass states that, the sum of the initial mass of reactants must be equal to final mass of the products.

[tex]_{15}^{30}P\ --- > \ _{14}^{30} Si \ + \ ^{0}_{1} n[/tex]

The balanced reaction of radioactive decay of phosphorous shows conservation of mass.

Thus, in order to satisfy charge conservation and lepton number conservation the other products must be neutron.

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Answer:

n=15 moles H2O

1:2

x:15

x=7.5 moles of O2

Answer:

what is on the surface of the moon.

Explanation:

Answer:

b

Explanation:

is the dictionary definition of a word.

is the feeling or idea associated with a word.

Answer:

CONDENSATION When steam is cooled, it releases thermal energy and turns into its liquid state. This process is called condensation.

Explanation:

Answer:

D. has characteristics between conductor and insulator

It can be said that water will take more heat to raise its temperature by 1°C than copper. Details about specific heat can be found below.

Specific heat capacity of a substance can be defined as the amount of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K or 1 °C.

According to this question, water has a specific heat of 4.184 J/g°C while Copper metal has a specific heat of 0.385 J/g°C. This shows that water has a higher specific heat.

Therefore, it can be said that water will take more heat to raise its temperature by 1°C than copper metal.

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Answer:

its probably all of the above, if not then it should be the formation of a new liquid, and a color change

Explanation:

Answer:

-22750.5J or -2.28× 10⁴J

Explanation:

q=(75.0g)(4.184J)(27.5°C-100.0°C)

q= -22750.5J

q= -2.28× 10⁴J

Answer:

a. because it is an element

Explanation:

its pure because it only has one type of atom, making it an element

Molarity is the ratio of the moles and the volume. The mass of 2.6 M sodium phosphate solution is 2131.22 gms.

Mass is the product of the moles and the molar mass of the substance. It is given as,

Mass = Moles × Molar mass

The moles from molar concentration is used to calculate mass as:

Mass = Molarity × volume × molar mass

= 2.6 × 5.0 × 163.94

= 2131.22 gms

Therefore, 2131.22 gms is the mass of sodium phosphate.

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Copper is a soft, ductile, and malleable metal that bends and stretches easily without breaking. Copper is a versatile metal for construction and manufacturing because of this.

there an A B C D thing?

Explanation:

890

Answer: thrusters

Explanation: got it right

Answer:

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil