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Nataly
2 days ago
15

What is the element with the nlx notation of 5d2?

Chemistry
1 answer:
eduard [944]2 days ago
7 0
The element represented by the nlx notation of 5d2 is hafnium, designated by the symbol hf. It is categorized as a chemical element with the atomic number 72. Hafnium has a chemical resemblance to zirconium and occurs in various zirconium minerals, whereas it is distinct from zirconium which shares some chemical similarities.
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How many milliliters of 0.200 M NH4OH are needed to react with 12.0 mL of 0.550 M FeCl3?
eduard [944]

Response:

9.9 ml of 0.200M NH₄OH(aq)

Reasoning:

3NH₄OH(Iaq) + FeCl₃(aq) => NH₄Cl(aq) + Fe(OH)₃(s)

What volume in ml of 0.200M NH₄OH(aq) will fully react with 12ml of 0.550M FeCl₃(aq)?

1 x Molarity of NH₄OH x Volume of NH₄OH Solution(L) = 2 x Molarity of FeCl₃ x Volume of FeCl₃ Solution

1(0.200M)(Volume of NH₄OH Soln) = 3(0.550M)(0.012L)

=> Volume of NH₄OH Soln = 3(0.550M)(0.012L)/1(0.200M) = 0.0099 Liters = 9.9 milliliters

5 0
8 days ago
which intensive physical property is observed when droppings of a person seated inside a closed room has able to reach a person
lions [985]

Answer:

The correct answer is "Speed".

Explanation:

  • An intensive or individualized physical property is identified when "speed" is observed as the excretion of an individual in a confined area, capable of reaching someone one meter away after sneezing or coughing.
  • This measure is represented in the unit of "meter per second", indicating its intensive nature.
5 0
15 days ago
If the kinetic energy of a particle is equal to twice its rest mass, what is the velocity of the particle? Determine if relativi
lorasvet [956]

Answer:

The particle's velocity is calculated to be 2 m/s,

Explanation:

Kinetic energy refers to the energy an object possesses due to its movement. The formula for kinetic energy is:

K.E=\frac{1}{2}mv^2

Where:

m = the mass of the object

v = the object's velocity

A particle with mass m has a kinetic energy that is double its mass.

K.E=2m

2m=\frac{1}{2}mv^2

v^2=\frac{4}{1}

v=2

Since the velocity is measured in m/s, we determine that the particle's speed is 2 m/s.

8 0
8 days ago
Name one manufactured device or natural phenomenon that emits electromagnetic radiation in each of the following wavelengths: ra
alisha [964]
Radio - A radio station sends out radio waves that are received by a radio receiver.
<span>Microwaves - A microwave oven heats food using microwave radiation.</span>

<span>Infrared - Infrared light is utilized by TV remotes to send signals to a sensor on the TV, enabling functions like volume adjustment and channel selection.</span>

<span>Visible light - Comes from sunlight or light bulbs.</span>

<span>Ultraviolet - UV lamps are used for tanning and for verifying the authenticity of currency.</span>

<span>X-rays - Machines for chest X-rays and backscatter X-ray scanners for airport security utilize X-rays.
</span>
Gamma rays - <span>Gamma rays are utilized in medical instruments for eliminating cancer cells and for sterilizing medical supplies.</span>
7 0
3 days ago
The metallic radius of a potassium atom is 231 pm. What is the volume of a potassium atom in cubic meters?
Anarel [852]
1 pm equals 10^{-10} cm. Therefore, 230 pm can be converted to 2.3 × 10^{-8} cm. Atoms are spherical in shape, and the volume of a sphere can be calculated using the formula 4/3πr³. Consequently, the atom's volume is calculated as 4/3π(2.3 × 10^{-8})³. Evaluating this gives 4/3 × (3.142 × 12.167 × 10^{-24}), which simplifies to approximately 5.096 × 10^{-23} cm³. Since 1 m³ is equal to 1,000,000 cm³, we find that the volume of the atom is 5.096 × 10^{-29} m³.
8 0
11 days ago
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