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Marianna [84]
3 years ago
7

Which subatomic particles are found in the nucleus of an atom of beryllium?

Chemistry
1 answer:
larisa86 [58]3 years ago
5 0
Protons and Neutrons
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A sample of a gas (1.50 mol) is contained in a 15.0 l cylinder. the temperature is increased from 100 °c to 150 °c. what is the
pav-90 [236]

<u>Given:</u>

Moles of gas, n = 1.50 moles

Volume of cylinder, V = 15.0 L

Initial temperature, T1 = 100 C = (100 + 273)K = 373 K

Final temperature, T2 = 150 C = (150+273)K = 423 K

<u>To determine:</u>

The pressure ratio

<u>Explanation:</u>

Based on ideal gas law:

PV = nRT

P= pressure; V = volume; n = moles; R = gas constant and T = temperature

under constant n and V we have:

P/T = constant

(or) P1/P2 = T1/T2 ---------------Gay Lussac's law

where P1 and P2 are the initial and final pressures respectively

substituting for T1 and T2 we get:

P1/P2 = 373/423 = 0.882

Thus, the ratio of P2/P1 = 1.13

Ans: The pressure ratio is 1.13


7 0
3 years ago
Can you use active transport in a sentence
otez555 [7]

Active transport is the moving of molecules across the membrane of the cell against the concentration gradient with the use of ATP.

Low to high concentration. Concentration gradient is the diffusion (movement of molecules from regions of low concentration) from high to low with the gradient. Active transport is from low to high, against the gradient.

6 0
4 years ago
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As you move across the periodic table atoms tend to get smaller because
nirvana33 [79]

Answer: because atoms have more protons

Explanation: just took the test

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3 years ago
Below is the correct formula unit for Sodium Chloride
ankoles [38]

Answer:

False. NACl is Sodium Chloride. NACl2 is not possible.

Explanation:

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3 years ago
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Chlorine and bromine have very similar chemical properties. This is best explained by the fact that both elements:
34kurt

What is the similarity between chlorine and bromine?

Chlorine and bromine have very similar chemical properties and are best explained by the fact that they both belong to the category of halogens.

Similarities shared by halogens:

Chemical elements are represented as periods and groups on a periodic table. Chemical elements with comparable properties make up each category. Halogens are group 17 elements that are primarily non-metallic.

In the case of halogens, each element's atom possesses seven valence electrons, ns^{2} np^{5}, in which n stands for the energy level. The electron configuration of chlorine is [Ne]3s^{2} 3p^{5}, and the electron configuration of bromine is [Ar]3d^{10}4s^{2} 4p^{5}.

Because of comparable electron configurations, elements of the same group have similar properties. The number of valence electrons, which are located in the outermost (highest energy) s and p orbitals, is particularly similar.

Learn more about halogens here;

brainly.com/question/4725757

#SPJ4

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2 years ago
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