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Anastaziya [24]
3 years ago
9

The elements in period 3 all have what characteric

Chemistry
1 answer:
Anastasy [175]3 years ago
7 0
The answer is that they all have metallic structures
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How many Electrons make up 1 Proton
Nastasia [14]
<span> the answer is that you need 1836 </span>electron<span> to equal the mass of a </span>proton<span>.</span>
6 0
3 years ago
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Give the chemical symbols for the following elements: (a) potassium, (b) tin, (c) chromium, (d) boron,(e) barium, (f) plutonium,
Ilia_Sergeevich [38]

Answer:

A) Alkili Metal

B) Basic Metal

C)  Transition Metal

D) Semimetal

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H) Noble Gas

I) Transitional Metal  

Hope This Helps

8 0
4 years ago
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. The chan
Oksanka [162]

Answer:

1.21 × 10⁻³⁰ m

Explanation:

1 mol of photons causing the change in the conformation of 11-retinal has an energy of 164 kJ. We can find out the wavelength (λ) associated with this energy (E) using the Planck-Einstein equation.

E = h . c . λ⁻¹

where,

h is the Planck's constant

c is the speed of light

λ = h . c . E⁻¹ = (6.63 × 10⁻³⁴ J × s) × (3.00 × 10⁸ m/s) × (164 × 10³ J)⁻¹ = 1.21 × 10⁻³⁰ m

3 0
3 years ago
Adenosine triphosphate is the:
OlgaM077 [116]

Answer:

B. Energy Molecule

Explanation:

Adenosine triphosphate, or ATP, is the primary carrier of energy in cells. The water-mediated reaction known as hydrolysis releases energy from the chemical bonds in ATP to fuel cellular processes. Adenosine triphosphate (ATP), energy-carrying molecule found in the cells of all living things.

5 0
3 years ago
which two conditions can limit the usefulness of the kinetic-molecular theory in describing gas behavior
alex41 [277]

Answer:

The two conditions that can limit the usefulness of the kinetic-molecular theory in describing gas behavior are "high pressure" and "low temperatures". At low temperatures or high pressures, real gases deviate significantly from ideal gas behavior.

Explanation:

7 0
3 years ago
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